Doesn't inform user of hitting 100 subreddit cap on list

[umer936]

• My browser (copy from https://www.whatismybrowser.com): https://whatismybrowser.com/w/X6Z4CTP
• My RES version: v5.22.17
• Am I in reddit beta (yes/no): no

What's the problem?
When adding a subreddit to a multireddit, if that list contains 100 items, it appears as if it succeeded, but after refreshing the page, it is not in the multireddit. This is an issue because it was unexpected behavior as I thought that if the checkbox showed up, it was added to the list. A notice that the cap has been hit (so one can then make a [listname]2 or something) would be super useful to me. Maybe it could say "full" or something next to the name? or just refresh that multireddit list to see if it "took"? Not sure.

Are there any related posts in https://github.com/honestbleeps/Reddit-Enhancement-Suite/issues or /r/RESissues?
Didn't see a related one by searching.

What other browser extensions are installed?
Ecosia Search, ForgetMeNot