Minimises full screen UWP app on 2nd display when used

[dslat]

Running full screen UWP app on Windows 10 second display for media playback. Using OBS studio to capture media display or Hikvision PTZ camera using onvif. Using virtual webcam to share in zoom.

Using v 16.0 test2 of obs-ptz

When the PTZ dock is enabled, launching OBS studio minimises the display on the second screen.
Maximising it again... Pressing any scene or PTZ control button in OBS minimises the app on the other display.

Tried updating OBS studio, and even latest beta and same behaviour. Restarting OBS in safe mode, or disabling PTZ dock and restarting OBS - behaves normally. Other app stays full screen on second display and all controls operate as normal.

Any ideas?

[dslat]

Enabling the PTZ controls dock after running OBS studio works ok as expected. Other app does not minimise.
The dock then needs to be closed before exiting OBS studio so it does not fail next time OBS is run.