Exiting full screen resets player window size

Platforms Mac
1
  1. Play a video. The player window initially appears at a default size (I assume some % of the original frame size).
  2. Resize the player window, make it larger or smaller.
  3. Enter full screen.
  4. Exit full screen (regardless of whether playback continues or not(.

After exiting the full screen, the player window goes down to that step #2 custom size, but then immediately reverts to the default size (#1).

This is quite annoying. Is it a feature or a bug? I couldn’t find any setting to control this behavior either.