Question / Help [Solved] Windows disappeared

[Forethat]

I have used OBS to capture individual windows for a while but since a few days back the individual windows are no longer available in the list. For instance, my Photoshop window is not listed. Neither is Chrome nor Microsoft Word.

Anyone with a clue what goes on?

 

[Forethat]

Found the reason for this:

This issue appears if you unplug a second monitor that was mirrored to your primary screen. Plugging the second screen back in and remove the mirror option before unplugging the monitor resolves the issue.