It used to have a nice preview of what was being clipped.
I think it’s been gone since the very nice addition of clipping HTML was added.
It’s missing from my install on latest firefox on windows 10 anyway.
Also it would be lovely if the clipper would work with Reader View pages, which does a great job of removing cruft/ads etc already. At the moment it doesn’t work due to “host permissions” which, is somewhat beyond my understanding.
I use Joplin mainly to clip, edit and export.