Editor window title and some button titles turn black when custom formatted tooltips are shown using Mobile/Forward+ renderer

[lostminds]

Tested versions

4.3.stable

System information

macOS 14.6.1

Issue description

When using the Mobile or Forward+ renderers the window title of the macOS editor window, (and unselected tab items to the left of the selected) turn black instead of white when the window loses focus. Interestingly, this also happens when you hover over FileSystem file items and get their tooltip popups (I guess these tooltips are implemented differently than other tooltips, causing the window to lose focus?).

The issue does not happen using the Compatibility renderer, which is also strange.

Expected appearance (compatibility renderer):

Mobile (same on Forward+):

Hover tooltip discrepancy. Notice effect when hovering over a file: https://github.com/user-attachments/assets/ad464126-5de5-4ee8-b1c8-18160cab7bf1

Steps to reproduce

• Run the Godot editor on macOS with a project using Mobile or Forward+.
• Open the About Godot or Settings window, causing the main window to lose focus.
• Or, try hovering a file in the file system.

Minimal reproduction project (MRP)

Just editor required.

[AThousandShips]

Can't reproduce in 4.4 [97ef3c837] on Windows 11 so might be macOS specific

[lostminds]

After a little more investigation it looks like this is related not to window focus loss, but rather showing the more advanced custom formatted hover tool tips that are used for example for files in the File system panel. And as you can see in the Export dialog, it also affects some button titles. However, it's not triggered if the window loses focus as I thought at first, but when these special formatted tooltips are shown.