hoe do I use spectacle screen recording?

[Gary Dale]

I've just switched into a Plasma/Wayland session on my Debian/Trixie 
AMD64 system so I could try out screen recording with Spectacle. However 
I can't figure out how to get it to work. I switch to the "recording: 
tab, and select the video format, but then what? I can select 
"workspace", "selected screen" or "selected window" , after which 
clicking somewhere starts recording but the "Finish recording" button 
seems to react but actually does nothing. The recording timer keeps 
incrementing and I can't seem to save the recording.

Am I missing something or is the screen recording facility simply not 
working currently?