Service manager activities - Users suddenly blocked out of being able to reallocate tasks to different teams via the edit function

[Jack Stanton]

Good Morning,

Today our teams have started to notice that where an activity is assigned to a team through the BPM as a part of a change they cannot then go in to "edit" that activity and then reallocate it to another team within our organisation. This used to be the common functionality our teams would use where change related tasks change hands without the generation of additional tasks. This has happened previously and after some time appeared to start working once more but has since stopped functioning again. 

I can confirm nothing has changed in our instance regarding permissions that we have altered which would impact this. Please can you advise how we can get this functionality back since this is disrupting workflows. Many thanks. 

I've tried to attach an image but this doesn't seem to be working. When the user attempts to go to "Edit" on the top right of the activity they are usually presented by a series of options, one of which being "assign to" usually this allows for people to set to "team" and then choose the team they wish to reassign that activity to before hitting save. The team selection is however greyed out and now makes this impossible.