Hi!
I dont have permission to post in the bug reports section of the forums yet, but I thought I may as well put this in here since I dont want to take up another ticket.
So a cutscene softlock is when you are unable to progress a cutscene or end it typically due to a dialogue box bug. I just found out why it happens. During high ping servers, completing a dialogue box during a scene can cause the rest of the dialogue not to load in. [in this case, a 2k-10k ping USE server whilst Im in the UK]
F9 included!
EDIT:
The bug where cutscenes do not start or are stuck attempting to start is a completely different bug! Im unsure what causes it, but in my experience simply waiting a few minutes will let the game eventually load the cutscene
EDIT2:
Looking back on the clip, it also gave me the dialogue for when you talk to him after the cutscene which may be a factor O_O