The minimize, maximize, and close buttons are all not working.

mpv Information

mpv v0.41.0-dev-g6aa0c9209 Copyright © 2000-2026 mpv/MPlayer/mplayer2 projects
 built on Jul 28 2026 13:49:55
libplacebo version: v7.371.0
FFmpeg version: git-2026-07-28-fe95359
FFmpeg library versions:
   libavcodec      63.6.101
   libavdevice     63.2.100
   libavfilter     12.3.101
   libavformat     63.5.101
   libavutil       61.5.100
   libswresample   7.2.100
   libswscale      10.2.100

Other Information

- Windows version: 10 19044 x64
- GPU model, driver and version: GT610
- Source of mpv: https://github.com/mpv-player/mpv/actions/runs/30364706258/artifacts/8691027764
- Latest known working version:
- Issue started after the following happened:

Reproduction Steps

The minimize, maximize, and close buttons are all not working.

Expected Behavior

The minimize, maximize, and close buttons are all working.

Actual Behavior

The minimize, maximize, and close buttons are all not working.

Log File

 mpv.exe "F:\tool\Videos\\NTIE-663.mkv"
Playing: F:\tool\Videos\\NTIE-663.mkv
 ● Video  --vid=1               (h264 1920x1080 29.97 fps) [default]
 ● Audio  --aid=1  --alang=eng  (opus 2ch 48000 Hz) [default]
AO: [wasapi] 48000Hz stereo 2ch float
VO: [gpu-next] 1920x1080 yuv420p
[ao/wasapi] Under-run: Device delay: -600 ns
Audio device underrun detected.
Saving state.
AV: 00:00:41 / 01:40:31 (1%) A-V:  0.000 Dropped: 18
Exiting... (Quit)

Sample Files

No response

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

• I tested and confirmed that the issue exists with the latest release version or newer.
• 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 on Windows 10 x64 with the linked mpv v0.41.0-dev build and the shown mpv.exe command. Use the attached screenshot and log to investigate why the minimize, maximize, and close buttons do not respond; done means all three window buttons work normally.