Neovide fullscreeen window randomly disappears when switching from other fullscreen apps on macOS

[lutalli]

Describe the bug It's a quite weird bug: On macOS, when Neovide is in fullscreen, and when I switch from Neovide to other fullscreen apps and switch back (like using Command + Tab shortcut or three-finger sliding on touchpad), there's a chance that the Neovide window disappears.

Not happening when Neovide or the window been switched from is not in fullscreen.

To Reproduce Steps to reproduce the behavior:

1. Enable Neovide fullscreen mode
2. Focus Neovide window
3. Press Command + Tab to switch to another fullscreen app
4. Press Command + Tab to switch back to Neovide (normally, the fullscreened Neovide window will be shown after this step)
5. Repeat step 3 and 4 until Neovide window disappears
6. Repeat another time to see Neovide window comes back

Expected behavior Neovide window should consistently remain during the process of switching.

Recording The following clip shows how it is happening. The "NERV" thing is my wallpaper, when it's visible it means that the fullscreened Neovide window disappeared.

https://user-images.githubusercontent.com/47910890/225592037-78b0adab-80e0-42f9-8e7d-ca47a8fc6b7a.mov

Desktop:

• OS: macOS Monterey 12.4
• Neovide: 0.10.0
• NeoVim: 0.8.2

Please run neovide --log and paste the contents of the .log file created in the current directory here: Visit Ubuntu Pastebin to see the full log file (considering pasting the long log here would mess up).

The log file does not necessarily match the recording above perfectly, but it also includes the case.

[lutalli]

Not a direct solution to this bug, but the workaround I use for now is to make Neovide maximalized framelessly, instead of fullscreen. It has the same visual effect as fullscreen, gets rid of the random disappearance of the window, and even solves the problem that the MacOS menu bar is not accessible in fullscreen mode.

NOTE: Looks like there's currently no configuration option for launching Neovide in frameless mode, but the frameless mode can be enabled using the command argument neovide --frame none.

[fredizzimo]

I have a potential fix for this here:

• https://github.com/neovide/neovide/pull/2562

It would be good if someone could test it.