For now you can expand the window until the screenshots show up on the side (instead of on top). I’ll try to fix it in the next update.
I'm not sure if I'm doing it right, but so far the right corner of the screen is still cut off. I guess I'll wait until the next update in the meanwhile. Looking forward to the future updates.
The issue is finally fixed, thanks!
Edit: the fullscreen button doesn't seem to work, but thankfully at least I can see the whole screen now.