Gwenview not closing nicely

After transfer of Files (images) from SD card Gwenview refuses to shut down when asked. Has to be forced.
Problem arose in previous, updated, install (20.0) a couple of months ago, and is still present in clean slate (20.1) install.
Bear in mind, this is Gwenview as started from a pop up after plugging an SD card into the system, not as selected from the system menu etc.
Point me in the right direction to discover whats happening please.

This bug on the kde bugtracker sounds similar to your problem:

Report your findings there.

Thanks. Didnt find that when doing a search.