Sticky windows not working properly when F11 (Show Desktop)

[Immanuel84]

When you use "Show Desktop" feature (from System Preferences > Mission Control), sticky windows does not stay "sticky" (XRG goes away with all other apps).
Behaviour changed since XRG 2.8.2, still working on 2.8.1.
Tested on MacOS X 10.11.6 and macOS 10.13.

[mikepj]

Marking this as an enhancement. There are different window levels coming into play here. Need to add an additional Fixed Background window level that exhibits the old behavior.