Edit Profile: No notice about Maximum characters limit

Hello.
1) In backend I set "Maximum characters: 255" for Textarea field in user profile.
2) edit profile ant paste text that more than 300+ symbols
Result 1: I can see Ret field title now (it become red)
Result 2: When I click SAVE it display popup with message:
"Error! There are some fields that cannot be left empty. Please fill in the highlighted fields to proceed."

But field is allready filled.
It's impossible to understand that there is "Maximum characters: 255" and my Textarea should be edited to be more shortier.

Video exapmle: https://www.dropbox.com/s/20vw61xjhrrrm0j/bandicam%202019-04-27%2013-37-11-289.mp4?dl=0

At the moment in my site I removed 255 limit.

Thanks.