Do you still have that save? If so, could you upload your player profile (from "users/profiles" folder) somewhere, please. And, if possible, try making a tactical save near this trouble point or right when the timer appears.
That would be fantastic if you could take a look at it.
I am uploading the files to Google Drive right now. The tactical save is huge, so I will post again when it is available.
When the load the save, the cease fire should occur within 5 minutes, without any other action taken.
Thanks!