After I group nodes in IDA in the Graph View and name them, I can't change the name. I tried
Edit group text button:
I also tried anterior, posterior, normal comment and repeatable comment.
I tried it in 2 different versions of IDA: 7.2 and 7.6 and on 2 different unrelated executables.
Here's the video in real time which demonstrates the problem: https://imgur.com/T36Mp3l