[c.a.streams.thirdparty.ActivityServiceActiveObjectsImpl] Ignoring invalid activity in database (id=3205): title exceeds maximum length of 255 characters

Hi,

we're using the Issue Reminders 1.14.2 Version and I see a lot oft he following WARN Notifications in the atlassian-jira.log:

2020-11-03 08:01:51,701 StreamsCompletionService::thread-176645 WARN USERNAME 481x13571986x2 1gnrssj xxx,xx /plugins/servlet/streams [c.a.streams.thirdparty.ActivityServiceActiveObjectsImpl] Ignoring invalid activity in database (id=3205): title exceeds maximum length of 255 characters

The Activitystream is showing Reminder Notifications and somehow produce this kind of WARN for every user that is using the Activity Stream and has "Issue Reminder" marked as shown.

Any idea what could cause this?