AirDrop “received item from” quick open tab

I would recommend you post a bug report with Apple. Sometimes older systems are not tested enough so things fall thru the cracks.

I would recommend booting up with an external drive which has the older version of OS. There is a bit of a wrinkle here as when you upgraded from Sierra to Hight Sierra the installer also updated your drives file system it was HFS+ to APFS. So going back to Sierra won’t be possible.

Frankly, I find Hight Sierra has too many issues and highly recommend going the Mojave 10.14.6 being the current and best macOS. I would not go to Catalina as its still to buggy! Hopefully the next maintenance release fixes things.

Generally, I always make a fresh backup before do a major release when the file system is altered as in this case. In every major release I also create bootable external drive with my current macOS as well as the needed OS installer so if needed I can roll it back.

While rare, having a plan B is always a good idea!