4.0 alpha 1 problem with editor in full screen mode

[Torguen]

Godot version

v4.0.alpha1.official [31a7ddb]

System information

w10 64 radeon vega 8

Issue description

Video capture in full screen mode seems to have problems but I guess they are out of Godot's control, the screen will go completely black at times.

When you go full screen and hold your cursor for a description (on the button to play the scene) these things appear
You will need to pause the video at 0:00:07 (at 7 seconds) and look at the top edge of the window, then continue playback and note at 0:00:11 that the error message appeared.

2022-01-25.10-24-39.mp4

Steps to reproduce

Enter in full screen mode
Hover (and hold) the cursor over the play scene icon to get the description.

Minimal reproduction project

...

[akien-mga]

It doesn't seem reproducible for me on Mageia Linux with KDE Plasma desktop and AMD Radeon RX Vega M (Mesa 21.3.4).
The issue might be Windows specific.

[CaelusV]

win10, nvidia 1060 6gb
v4.0.alpha1.official [31a7ddb]

While in fullscreen, hovering for a description produces black screen flashes.
Clicking on any button with a dropdown menu produces black screen flashes.
Recording in OBS shows black screen almost the entire time while in fullscreen – like in the original video by OP.
NVIDIA Shadowplay produces a much more interesting result, with the ENTIRE screen being filled up by the description when hovering a button. The black flashes cannot be seen in the recording for some reason.

godot_fullscreen_hover_description_bug.mp4

This does not occur while fullscreen mode is disabled.

[DaSlang]

Something similar also happens on MacOS (BigSur 11.6.2) using Godot 4 Alpha 1 31a7ddbf8.

When in fullscreen mode, editor tooltips are not shown correctly:

Tooltip.mov

Everything works fine if the fullscreen mode is disabled.

It's also worth noticing that everything is ok when using Godot v3.4.stable.official 206ba70f4.

[DaSlang]

[EDIT]

Nevermind, seems like that , even without any modification, in the current master branch this issue is solved (tested on MacOS).

---

[OLD]

Adding the flag FLAG_ALWAYS_ON_TOP to true in the Popup constructor seems to fix it, at least on MacOS.

Popup.mov

If this can be a sensible answer, I can test this a little bit more and make a pull request if everything works 😄

[bruvzg]

It was fixed on macOS for popups, I guess tooltip windows do not have transient flag set.

[bruvzg]

Tooltip transient flag is set to false, changing it to true will fix tooltips on macOS. But it might be set to false for a reason (need to be tested on other platforms).

godot/scene/main/viewport.cpp

Line 1228 in 46053a1

panel->set_transient(false);

Not sure if it's possible to have other windows on top of full-screen on Windows, I'll experiment with the different window flags, but there's no obvious way to do it.