diff --git a/core/chooser_test.go b/core/chooser_test.go
index 956d31179f..c7e72ed21c 100644
--- a/core/chooser_test.go
+++ b/core/chooser_test.go
@@ -89,7 +89,7 @@ func TestChooserEditableClick(t *testing.T) {
 }
 
 func TestChooserEditableTextFieldClick(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	b.Styler(func(s *styles.Style) {
 		s.Min.Set(units.Em(20), units.Em(10))
@@ -112,7 +112,7 @@ func TestChooserAllowNewClick(t *testing.T) {
 }
 
 func TestChooserEditableAllowNewClick(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	b.Styler(func(s *styles.Style) {
 		s.Min.Set(units.Em(20), units.Em(10))
@@ -124,7 +124,7 @@ func TestChooserEditableAllowNewClick(t *testing.T) {
 }
 
 func TestChooserEditableAllowNewTextFieldClick(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	b.Styler(func(s *styles.Style) {
 		s.Min.Set(units.Em(20), units.Em(10))
diff --git a/core/filepicker_test.go b/core/filepicker_test.go
index 499f1040d9..23c0f6d851 100644
--- a/core/filepicker_test.go
+++ b/core/filepicker_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 func TestFilePicker(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	NewFilePicker(b)
 	b.AssertRender(t, "file-picker/basic")
diff --git a/core/form_test.go b/core/form_test.go
index 1c1e6dd5b3..3f19d217f2 100644
--- a/core/form_test.go
+++ b/core/form_test.go
@@ -36,7 +36,7 @@ func (mp *morePerson) FieldWidget(field string) Value {
 }
 
 func TestForm(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	NewForm(b).SetStruct(&person{Name: "Go", Age: 35})
 	b.AssertRender(t, "form/basic")
diff --git a/core/init.go b/core/init.go
index 43bb4c819a..67d265d7d0 100644
--- a/core/init.go
+++ b/core/init.go
@@ -10,8 +10,8 @@ import (
 
 func init() {
 	system.HandleRecover = handleRecover
-	system.InitScreenLogicalDPIFunc = AppearanceSettings.applyDPI // called when screens are initialized
-	TheApp.CogentCoreDataDir()                                    // ensure it exists
-	theWindowGeometrySaver.needToReload()                         // gets time stamp associated with open, so it doesn't re-open
+	system.UpdateLogicalDPIScaleFunc = AppearanceSettings.updateLogicalDPI
+	TheApp.CogentCoreDataDir()            // ensure it exists
+	theWindowGeometrySaver.needToReload() // gets time stamp associated with open, so it doesn't re-open
 	theWindowGeometrySaver.open()
 }
diff --git a/core/renderwindow.go b/core/renderwindow.go
index 76a2fcf8be..36bb76167f 100644
--- a/core/renderwindow.go
+++ b/core/renderwindow.go
@@ -550,9 +550,12 @@ func (w *renderWindow) handleWindowEvents(e events.Event) {
 			}
 			if !TheApp.Platform().IsMobile() { // native desktop
 				if TheApp.NScreens() > 0 {
-					AppearanceSettings.Apply()
+					// if TheApp.Platform() == system.Offscreen { // note: this is not necessary,
+					// 	// but matches the testing results in subtle ways
+					// 	AppearanceSettings.Apply()
+					// }
 					UpdateAll()
-					theWindowGeometrySaver.restoreAll()
+					// theWindowGeometrySaver.restoreAll()
 				}
 			} else {
 				w.resized()
diff --git a/core/settings.go b/core/settings.go
index 06e0601085..e45ca41186 100644
--- a/core/settings.go
+++ b/core/settings.go
@@ -383,9 +383,9 @@ func (as *AppearanceSettingsData) Apply() { //types:add
 	as.applyDPI()
 }
 
-// applyDPI updates the screen LogicalDPI values according to current
-// settings and zoom factor, and then updates all open windows as well.
-func (as *AppearanceSettingsData) applyDPI() {
+// updateLogicalDPI updates the screen LogicalDPI values according to current
+// settings and zoom factor. set this as [system.UpdateLogicalDPIFunc] function.
+func (as *AppearanceSettingsData) updateLogicalDPI() {
 	// zoom is percentage, but LogicalDPIScale is multiplier
 	system.LogicalDPIScale = as.Zoom / 100
 	// fmt.Println("system ldpi:", system.LogicalDPIScale)
@@ -401,6 +401,12 @@ func (as *AppearanceSettingsData) applyDPI() {
 		}
 		sc.UpdateLogicalDPI()
 	}
+}
+
+// applyDPI updates the screen LogicalDPI values according to current
+// settings and zoom factor, and then updates all open windows as well.
+func (as *AppearanceSettingsData) applyDPI() {
+	as.updateLogicalDPI()
 	for _, w := range AllRenderWindows {
 		w.SystemWindow.SetLogicalDPI(w.SystemWindow.Screen().LogicalDPI)
 		// this isn't DPI-related, but this is the most efficient place to do it
diff --git a/core/slider_test.go b/core/slider_test.go
index 9bb84caaab..7d13553ff6 100644
--- a/core/slider_test.go
+++ b/core/slider_test.go
@@ -99,7 +99,7 @@ func TestSliderStart(t *testing.T) {
 }
 
 func TestSliderChange(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	sr := NewSlider(b)
 	n := 0
@@ -142,7 +142,7 @@ func TestSliderChangeClick(t *testing.T) {
 }
 
 func TestSliderInput(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := NewBody()
 	sr := NewSlider(b)
 	n := 0
diff --git a/core/svg.go b/core/svg.go
index c7c2c3bd70..33b0e3a1c8 100644
--- a/core/svg.go
+++ b/core/svg.go
@@ -151,13 +151,14 @@ func (sv *SVG) Render() {
 	if sv.SVG == nil {
 		return
 	}
-	needsRender := !sv.IsReadOnly()
+	needsRender := !sv.IsReadOnly() || sv.NeedsRebuild()
 	if !needsRender {
 		if sv.image == nil {
 			needsRender = true
 		} else {
-			sz := sv.image.Bounds().Size()
-			if sz != sv.prevSize || sz == (image.Point{}) {
+			sv.SVG.UpdateSize()
+			sz := sv.SVG.Geom.Size
+			if sz != sv.prevSize || sv.image.Bounds().Size() == (image.Point{}) {
 				needsRender = true
 			}
 		}
diff --git a/system/driver/android/android.go b/system/driver/android/android.go
index 9a4f9b4872..009409f770 100644
--- a/system/driver/android/android.go
+++ b/system/driver/android/android.go
@@ -352,8 +352,8 @@ func (a *App) MainUI(vm, jniEnv, ctx uintptr) error {
 			a.Scrn.PhysicalDPI = dpi
 			a.Scrn.LogicalDPI = dpi
 
-			if system.InitScreenLogicalDPIFunc != nil {
-				system.InitScreenLogicalDPIFunc()
+			if system.UpdateLogicalDPIScaleFunc != nil {
+				system.UpdateLogicalDPIScaleFunc()
 			}
 
 			physX := 25.4 * float32(widthPx) / dpi
diff --git a/system/driver/desktop/app.go b/system/driver/desktop/app.go
index 562236dc50..641dedfdaf 100644
--- a/system/driver/desktop/app.go
+++ b/system/driver/desktop/app.go
@@ -83,11 +83,11 @@ func (a *App) InitGPU() {
 }
 
 func (a *App) NewWindow(opts *system.NewWindowOptions) (system.Window, error) {
-	if len(a.Windows) == 0 && system.InitScreenLogicalDPIFunc != nil {
+	if len(a.Windows) == 0 && system.UpdateLogicalDPIScaleFunc != nil {
 		if ScreenDebug {
-			log.Println("app first new window calling InitScreenLogicalDPIFunc")
+			log.Println("app first new window calling UpdateLogicalDPIScaleFunc")
 		}
-		system.InitScreenLogicalDPIFunc()
+		system.UpdateLogicalDPIScaleFunc()
 	}
 
 	sc := a.Screens[0]
diff --git a/system/driver/desktop/screen.go b/system/driver/desktop/screen.go
index 6914ee2fce..4a7cbd6499 100644
--- a/system/driver/desktop/screen.go
+++ b/system/driver/desktop/screen.go
@@ -35,27 +35,32 @@ var (
 // MonitorChange is called when a monitor is connected to or
 // disconnected from the system.
 func (a *App) MonitorChange(monitor *glfw.Monitor, event glfw.PeripheralEvent) {
-	if ScreenDebug {
-		enm := "Unknown"
-		if event == glfw.Connected {
-			enm = "Connected"
-		} else {
-			enm = "Disconnected"
-		}
-		log.Printf("ScreenDebug: monitorChange: %v event: %v\n", monitor.GetName(), enm)
-	}
-	a.GetScreens()
-	if len(a.Windows) > 0 {
-		fw := a.Windows[0]
+	go func() {
 		if ScreenDebug {
-			log.Println("ScreenDebug: monitorChange: sending screen update")
+			enm := "Unknown"
+			if event == glfw.Connected {
+				enm = "Connected"
+			} else {
+				enm = "Disconnected"
+			}
+			log.Printf("ScreenDebug: monitorChange: %v event: %v\n", monitor.GetName(), enm)
 		}
-		fw.Event.Window(events.ScreenUpdate)
-	} else {
-		if ScreenDebug {
-			log.Println("ScreenDebug: monitorChange: no windows, NOT sending screen update")
+		a.GetScreens()
+		if len(a.Windows) > 0 {
+			if ScreenDebug {
+				log.Println("ScreenDebug: monitorChange: sending screen update")
+			}
+			for _, w := range a.Windows {
+				w.SetLogicalDPI(w.Screen().LogicalDPI)
+			}
+			fw := a.Windows[0]
+			fw.Event.Window(events.ScreenUpdate)
+		} else {
+			if ScreenDebug {
+				log.Println("ScreenDebug: monitorChange: no windows, NOT sending screen update")
+			}
 		}
-	}
+	}()
 }
 
 var lastScreenPoll time.Time
@@ -155,9 +160,9 @@ func (a *App) GetScreens() {
 				sc.DevicePixelRatio = 2
 				sc.PixelSize = sc.Geometry.Max.Mul(2)
 				sc.PhysicalSize = image.Point{344, 222}
-				sc.UpdatePhysicalDPI()
 				sc.Depth = 24
 				sc.RefreshRate = 60
+				sc.UpdatePhysicalDPI()
 				sc.UpdateLogicalDPI()
 				if ScreenDebug {
 					log.Printf("ScreenDebug: getScreens: MacOS unknown display set to Built-in Retina Display %d:\n%s\n", i, reflectx.StringJSON(sc))
@@ -232,6 +237,9 @@ func (a *App) GetScreens() {
 			a.Screens[1].ScreenNumber = 1
 		}
 	}
+	if system.UpdateLogicalDPIScaleFunc != nil {
+		system.UpdateLogicalDPIScaleFunc()
+	}
 }
 
 // SaveScreenInfo saves a copy of given screen info to screensAll list if unique
diff --git a/system/driver/desktop/window.go b/system/driver/desktop/window.go
index 68939d7017..95810a7536 100644
--- a/system/driver/desktop/window.go
+++ b/system/driver/desktop/window.go
@@ -134,9 +134,6 @@ func (w *Window) Screen() *system.Screen {
 	if w == nil || w.Glw == nil {
 		return TheApp.Screens[0]
 	}
-	w.Mu.Lock()
-	defer w.Mu.Unlock()
-
 	var sc *system.Screen
 	mon := w.Glw.GetMonitor() // this returns nil for windowed windows -- i.e., most windows
 	// that is super useless it seems. only works for fullscreen
@@ -159,6 +156,8 @@ func (w *Window) Screen() *system.Screen {
 	// 	log.Printf("ScreenDebug: desktop.Window.GetScreenOverlap: %v: got screen: %v\n", w.Nm, sc.Name)
 	// }
 setScreen:
+	w.Mu.Lock()
+	defer w.Mu.Unlock()
 	w.ScreenWindow = sc.Name
 	w.PhysDPI = sc.PhysicalDPI
 	if w.DevicePixelRatio != sc.DevicePixelRatio {
@@ -464,21 +463,25 @@ func (w *Window) SetCursorEnabled(enabled, raw bool) {
 ////////  Window Callbacks
 
 func (w *Window) Moved(gw *glfw.Window, x, y int) {
-	w.Mu.Lock()
-	w.Pos = image.Pt(x, y)
-	w.Mu.Unlock()
-	// w.app.GetScreens() // this can crash here on win disconnect..
-	w.updateGeometry() // critical to update size etc here.
-	w.Event.Window(events.WinMove)
+	go func() {
+		w.Mu.Lock()
+		w.Pos = image.Pt(x, y)
+		w.Mu.Unlock()
+		// w.app.GetScreens() // this can crash here on win disconnect..
+		w.updateGeometry() // critical to update size etc here.
+		w.Event.Window(events.WinMove)
+	}()
 }
 
 func (w *Window) WinResized(gw *glfw.Window, width, height int) {
-	// w.app.GetScreens()  // this can crash here on win disconnect..
-	if ScreenDebug {
-		log.Printf("desktop.Window.WinResized: %v: %v (was: %v)\n", w.Nm, image.Pt(width, height), w.PixelSize)
-	}
-	w.updateMaximized()
-	w.updateGeometry()
+	go func() {
+		// w.app.GetScreens()  // this can crash here on win disconnect..
+		if ScreenDebug {
+			log.Printf("desktop.Window.WinResized: %v: %v (was: %v)\n", w.Nm, image.Pt(width, height), w.PixelSize)
+		}
+		w.updateMaximized()
+		w.updateGeometry()
+	}()
 }
 
 func (w *Window) updateMaximized() {
@@ -511,18 +514,20 @@ func (w *Window) updateGeometry() {
 }
 
 func (w *Window) FbResized(gw *glfw.Window, width, height int) {
-	if w.Is(system.Fullscreen) {
-		sc := w.Screen()
-		width = sc.PixelSize.X
-		height = sc.PixelSize.Y
-	}
-	fbsz := image.Point{width, height}
-	if w.PixelSize != fbsz {
-		if ScreenDebug {
-			log.Printf("desktop.Window.FbResized: %v: %v (was: %v)\n", w.Nm, fbsz, w.PixelSize)
+	go func() {
+		if w.Is(system.Fullscreen) {
+			sc := w.Screen()
+			width = sc.PixelSize.X
+			height = sc.PixelSize.Y
 		}
-		w.updateGeometry()
-	}
+		fbsz := image.Point{width, height}
+		if w.PixelSize != fbsz {
+			if ScreenDebug {
+				log.Printf("desktop.Window.FbResized: %v: %v (was: %v)\n", w.Nm, fbsz, w.PixelSize)
+			}
+			w.updateGeometry()
+		}
+	}()
 }
 
 func (w *Window) OnCloseReq(gw *glfw.Window) {
diff --git a/system/driver/ios/ios.go b/system/driver/ios/ios.go
index f99c194098..315855d403 100644
--- a/system/driver/ios/ios.go
+++ b/system/driver/ios/ios.go
@@ -144,8 +144,8 @@ func updateConfig(width, height, orientation int32) {
 	TheApp.Scrn.PhysicalDPI = DisplayMetrics.DPI
 	TheApp.Scrn.LogicalDPI = DisplayMetrics.DPI
 
-	if system.InitScreenLogicalDPIFunc != nil {
-		system.InitScreenLogicalDPIFunc()
+	if system.UpdateLogicalDPIScaleFunc != nil {
+		system.UpdateLogicalDPIScaleFunc()
 	}
 
 	physX := 25.4 * float32(width) / DisplayMetrics.DPI
diff --git a/system/driver/offscreen/app.go b/system/driver/offscreen/app.go
index 38202fc4a8..84afd84fd2 100644
--- a/system/driver/offscreen/app.go
+++ b/system/driver/offscreen/app.go
@@ -84,8 +84,8 @@ func (a *App) GetScreens() {
 	sc.PhysicalDPI = dpi
 	sc.LogicalDPI = dpi
 
-	if system.InitScreenLogicalDPIFunc != nil {
-		system.InitScreenLogicalDPIFunc()
+	if system.UpdateLogicalDPIScaleFunc != nil {
+		system.UpdateLogicalDPIScaleFunc()
 	}
 
 	physX := 25.4 * float32(sc.PixelSize.X) / dpi
diff --git a/system/driver/web/app.go b/system/driver/web/app.go
index c9f0141856..6b7d11bcd0 100644
--- a/system/driver/web/app.go
+++ b/system/driver/web/app.go
@@ -124,8 +124,8 @@ func (a *App) Resize() {
 	a.Scrn.PhysicalDPI = dpi
 	a.Scrn.LogicalDPI = dpi
 
-	if system.InitScreenLogicalDPIFunc != nil {
-		system.InitScreenLogicalDPIFunc()
+	if system.UpdateLogicalDPIScaleFunc != nil {
+		system.UpdateLogicalDPIScaleFunc()
 	}
 
 	vv := js.Global().Get("visualViewport")
diff --git a/system/screen.go b/system/screen.go
index f66759320e..426c47f294 100644
--- a/system/screen.go
+++ b/system/screen.go
@@ -25,6 +25,10 @@ var (
 	// these can be set from preferences (as in gi/prefs) on a per-screen
 	// basis.
 	LogicalDPIScales map[string]float32
+
+	// UpdateLogicalDPIScaleFunc is a function that updates the system
+	// LogicalDPIScale and the per-screen LogicalDPIScales map
+	UpdateLogicalDPIScaleFunc func()
 )
 
 // note: fields obtained from QScreen in Qt
@@ -217,8 +221,3 @@ func ConstrainWindowGeometry(pos, sz, scSize image.Point) (cpos, csz image.Point
 	}
 	return
 }
-
-// InitScreenLogicalDPIFunc is a function that can be set to initialize the
-// screen LogicalDPI values based on user preferences etc.  Called just before
-// first window is opened.
-var InitScreenLogicalDPIFunc func()
diff --git a/text/textcore/base_test.go b/text/textcore/base_test.go
index 42b28aeefa..92daaa44fd 100644
--- a/text/textcore/base_test.go
+++ b/text/textcore/base_test.go
@@ -91,7 +91,7 @@ func TestBaseOpen(t *testing.T) {
 }
 
 func TestBaseScroll(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := core.NewBody()
 	ed := NewBase(b)
 	ed.Styler(func(s *styles.Style) {
@@ -117,7 +117,7 @@ func TestBaseMulti(t *testing.T) {
 }
 
 func TestEditorChange(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := core.NewBody()
 	ed := NewEditor(b)
 	n := 0
@@ -146,7 +146,7 @@ func TestEditorChange(t *testing.T) {
 }
 
 func TestEditorInput(t *testing.T) {
-	t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
+	// t.Skip("todo: unreliable, https://github.com/cogentcore/core/issues/1641")
 	b := core.NewBody()
 	ed := NewEditor(b)
 	n := 0