Removing the description from a file or file folder doesn't work.
What does work:
1. Editing a description of a file or a file folder, as long as you don't completely delete it - this works fine.
2. Uploading a file, or creating a folder, with no description to begin with - this also works fine.
What doesn't work:
Removing an existing description from a file or folder.
(This is completely reproducible. But for reference, right now I would like to remove the word "test" from the file "What to Expect" in the group Feline_Smallcell_Lymphoma, and it won't go away.)