Problem when trying to rename files. PDF .word . Excel .game .txt

Good morning

I have a problem when I save a file directly to owncloud.

It doesn’t give any errors, it just doesn’t save, I kept digging until I found the cause of the problem.

The problem is that files with more than 30 characters are not allowed to be renamed, as in other OwnCloud this problem exists only in one of the clients that started this limit

Can you help me