Small playback interruption when toggling fullscreen

[gramms]

Overview Description:
When you toggle fullscreen while a video is playing, there's a short but annoying playback interruption while celluloid does the switch.

Steps to Reproduce:

1. Open and play a video file
2. Toggle fullscreen while audio is hearable.

Actual Results:
Playback is interrupted for a split second while the transistion is happening. This happens both on entering and exiting fullscreen.

Expected Results:
The fullscreen toggle does not interrupt playback.

Version: 0.27

Additional Information:
I tested this with the flatpak version and with the version from my distro's repos (Fedora Workstation). Both show the same behavior. I could not reproduce this with pure mpv itself, so this seems to be a celluloid issue, not a mpv issue. The only option I changed in mpv.conf is save-position-on-quit=yes.
A log is attached, I toggled fullscreen at around 10 seconds after playback start.
celluloid.log