Preferences window needs to be dragged or resized before you can activate its save menu #86331

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.40

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-05 06:10, hash: b5d154f400
Worked: 2.93.0-d30320b4f59d

Short description of error
In the last few Blender 2.93 Alphas, you need to first move or resize the Preferences window before you can activate the save menu in the lower left corner.
Even if you click on other Preferences items first, you still need to move or resize the Preferences window top bar in order to access the save menu.
This wasn't necessary up to and including version 2.92. Something seems to have been changed in the Blender window or drop-down menu management to cause this.

Exact steps for others to reproduce the error

Press F4 for the File Context Menu.
Select Preferences.
In the Preferences window, click on the lower left corner save menu icon. It won't activate.
Now move or resize the Preferences window.
The save menu will now work.

Added subscriber: @MetinSeven-1

#87088 was marked as duplicate of this issue

#86887 was marked as duplicate of this issue

#86348 was marked as duplicate of this issue

Added subscriber: @erminos

It happened between Feb 4 and Feb 8. Works: 2.93.0-d30320b4f59d, Broken: 2.93.0-f5c781af5643

Thanks for the additional info, @erminos !

I remember those dates, when narrowed down for #85768 - which seems related.

Added subscriber: @Harley

Just to narrow down this behavior a bit.

Open "Preferences" window in any way. The resulting window has focus and everything works correctly. You can change pages and panels, alter sliders, enter values, click buttons. Everything works. Except... the little "menu" icon at bottom-left is not working. Doesn't look disabled, but clicking on it does nothing and there is no tooltip and no hover highlight.

As mentioned above, one way to make it work is to move the window a bit. Or you can open and close the bottom header. Or, more interesting, you can move your mouse just above the button where it turns into a up/down cursor (because of the hidden bottom header, click down and then it works too. Here is a capture showing this last (weird) way to get it working:

Wow, fuzzy logic. 😃

Added subscriber: @lichtwerk

Changed status from 'Needs Triage' to: 'Confirmed'

I cant actually reproduce this in Linux (adding the Windows tag here, but everyone, correct me if I am wrong and this also happens on Linux) it seems, but from the comments, I assume this can be confirmed.

Added subscribers: @Vyach, @rboxman

This is the same symptoms as these earlier reports:

Added subscriber: @Gilberto.R

Fix for this is here: https://developer.blender.org/D10636

Added subscriber: @AndresStephens

Can confirm the bug. Glad to see a fix.

Added subscriber: @leonardos

Added subscriber: @OlegBondarev

This issue was referenced by a9fc5be5fa

Changed status from 'Confirmed' to: 'Resolved'

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Preferences window needs to be dragged or resized before you can activate its save menu #86331