No idea why this was occurring with some collections & not with others, but it's a weird behavior. I was attemting to rename two of my collections (without any other changes) & every time I would recieve the message "To complete this form, please complete the word verification below". I would then fill out the verification text & press "save". But it wouldn't take & would show the message about completing the form again. It wasn't until I edited the description that my changes successfully saved.

The two collections in question were:

https://opengameart.org/node/76971

https://opengameart.org/node/76970

Just wanted to report this in case someone is having a similar issue.