My communication log "More actions...." menu shows 5 "Mass Update" links. I have no clue what each of them do?
You can delete these additional pages: use Object View page, Pages section.
Tracked as PSC00316209
I do not know why I didn't check this earlier (didn't know Mass Update has a page), but I just noticed this:
I have no idea why and how these pages have been added to the Comm. log, but they were added a while ago. Of course, removing these pages also fixed my problem. Really don't have a clue how these got added though...
Alright, glad I didn't make a mistake :) Thanks!