fullscreen=yes on GNOME Wayland restores to top-left tiny window after ESC

mpv Information

mpv v0.40.0 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
libplacebo version: v7.349.0
FFmpeg version: 7.1.1
FFmpeg library versions:
   libavcodec      61.19.101
   libavdevice     61.3.100
   libavfilter     10.4.100
   libavformat     61.7.100
   libavutil       59.39.100
   libswresample   5.3.100
   libswscale      8.3.100

Other Information

- Linux version:Fedora Linux 42 (Workstation Edition)
- Kernel Version:6.15.9-201.fc42.x86_64
- GPU Model:Advanced Micro Devices, Inc. [AMD/ATI] Renoir [Radeon Vega Series / Radeon Vega Mobile Series] [1002:1636] (rev c7)
- Mesa/GPU Driver Version: 4.6 (Compatibility Profile) Mesa 25.1.4
- Window Manager and Version:Mutter on Wayland
- Source of mpv: Fedora repository
- Latest known working version:
- Issue started after the following happened:when i enabled fullscreen=yes in config file

Reproduction Steps

1.Open mpv with fullscreen=yes set in mpv.conf.
2.Play any video file.
3.Press ESC to exit fullscreen mode.
4.Observe that the window jumps to the top-left corner and does not return to its normal window size.

Expected Behavior

When exiting fullscreen, mpv should restore the window to the same size and position it had before entering fullscreen mode.

Actual Behavior

After pressing ESC to exit fullscreen, the window moves to the top-left of the screen and remains in that position, without returning to its original size or location.

Log File

log-output.txt

Sample Files

When starting mpv with --fullscreen=yes on GNOME Wayland (Fedora 42, GNOME 48), pressing ESC to exit fullscreen restores the window to a tiny size in the top-left corner instead of a normal window size.

This happens because mpv never enters windowed mode first, so the compositor has no “last known window geometry” to restore.

Additional notes
This bug is Wayland-specific
Likely cause: On Wayland, if mpv never maps a window in windowed mode before fullscreen, GNOME Shell has no geometry to restore when exiting fullscreen.

Workaround: Start windowed for a short time before switching to fullscreen.
My workaround script Fix (~/.config/mpv/scripts/delayed-fullscreen.lua):

mp.register_event("file-loaded", function()
    mp.command("set window-scale 1.0")
    mp.add_timeout(0.1, function()
        mp.command("cycle fullscreen")
    end)
end)

This trick briefly maps mpv in windowed mode so GNOME can record valid geometry before switching to fullscreen. ESC then restores correctly.

I carefully read all instruction and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

Start by reproducing the issue with fullscreen=yes in mpv.conf on GNOME Wayland, using the supplied log-output.txt for comparison. Trace mpv's Wayland fullscreen and window-geometry handling around ESC and initial fullscreen startup; done means exiting fullscreen restores the prior normal size and position without requiring the delayed-fullscreen.lua workaround.