CMK version: 2.1.0p12 (RAW)
OS version: CentOS
Error message: Also have this issue.
No error, unable to remove comment and remove ACK does not help.
Ack/comments made with options (Sticky: no | send notification: yes | persistent comment: yes)
@andreas-doehler - Is this the same issue that should already be solved in (Werk: 12697)?