What I did: Clicked the search button on the Agenda UI
What happened: MacOS switched to a different desktop which does not contain the Agenda window. When I switch back to the desktop which contains the agenda window the search popup dialogue is open and I can use as expected.
What I expected: Not to change desktops!
Things that might be helpful to know (Agenda version, OS and model, etc):
Agenda 19.0 (302) Mac App Store
Sonoma 14.5