[Dropdown widget] Re-Opening, or using referenceVar:UpdateChoices(...) changes # of shown items (data.scrollable = nil)

[Baertram]

Test addon:
https://www.esoui.com/downloads/info2823-ItemCooldownTracker.html#comments
Just remove the data.scrollable at the dropdown

If a dropdown widget is used without explicitly setting data.scrollable = true/, and you add e.g. 30 rows to the dropdown's choices:
On first open it only shows a few rows (10):
https://i.imgur.com/66Ar1FJ.png

You can now use reference:UpdateChoices(choices, choicesValues) or just close and reopen the dropdown.
All of sudden all entries are shown:
https://i.imgur.com/fKThhVC.jpeg

I guess the first behaviour seems wrong and it should show always all entries, if data.scrollable = nil?