Toggling external monitor bugs source player playback

What is your operating system?
Windows 10 x64

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
21.12.24 + 22.03.06

Can you repeat the problem? If so, what are the steps?
Have a new project and open a clip inside the source player.
Toggle external monitor to screen 1 (either enable it or disable it if it was already set).
(In the source player) set an In point to the clip about halfway in.

Try to click to various areas of the clip’s timeline → the playback will point to some other time (see my example video as it’s hard to explain in writing exactly). Also navigation by page up/down seems to be completely ruined.

Workaround: re-opening the video in source player seems to clear the bugged state.
Note: this only happens if the source player is open during the external monitor toggle so it’s a rather minor inconvenience.