mpv closes on the last frame, instead of letting it be seen

mpv Information

mpv v0.40.0-dirty Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
libplacebo version: v7.349.0 (v7.349.0)
FFmpeg version: n8.0
FFmpeg library versions:
   libavcodec      62.11.100
   libavdevice     62.1.100
   libavfilter     11.4.100
   libavformat     62.3.100
   libavutil       60.8.100
   libswresample   6.1.100
   libswscale      9.1.100

Other Information

- Linux version: Arch Linux
- Kernel Version: 6.17.3-arch2-1
- GPU Model: Graphics Processor 1: Intel® Iris® Xe Graphics - Graphics Processor 2: NVIDIA GeForce GTX 1650
- Mesa/GPU Driver Version: mesa-1:25.2.5-3
- Window Manager and Version: KDE Plasma Version: 6.4.5
- Source of mpv: Flatpak
- Latest known working version: 
- Issue started after the following happened:

Reproduction Steps

1- Have a video with a very noticeable last frame.
2- Skip to the ending, then use [>.] key to navigate frame-by-frame to see that frame.

Expected Behavior

Being able to see that frame.
Even better if pressing forwards frame-by-frame with the [>.] key to go one a frame beyond the last frame wouldn't close MPV.

Actual Behavior

If you reach the last frame of a video by going frame-by-frame with the [>.] key, MVP will close as if you were watching the video.

It affects other players:
https://bugs.kde.org/show_bug.cgi?id=497841#c7

Log File

output.txt

Sample Files

No response

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.

Reproduce the behavior described in the frame-by-frame steps using the attached output.txt log as a reference. Inspect mpv's frame-stepping and end-of-file handling, then verify that reaching the last frame leaves it visible and does not close the player.