Hi, not sure if this is a known and reproducible bug, it's only happened to me once, I haven't seen it in other posts - I'll try to reproduce again tomorrow. Essentially after dropping the first SLAM-ER and having it touchdown in DMPI 4, and being told that the grisha is now a priority target, it gets stuck in the jetty while trying to leave the harbor and I never get any more comms. I've seen in videos of other people completing the mission that in theory once the Grisha leaves the harbor and detaches from the civilian vessel you get clearance to destroy it, but that never happened to me. The grisha just got stuck there in the jetty, I destroyed it with the second SLAM-ER even though I didn't have clearance b/c nothing was happening, and it didn't have any effect either, Flip doesn't sing his "touchdown" line or anything, the mission gest permanently hung.
Thank you very much anyway @baltic_dragon for your work in these fantastic campaigns, you're my #1 campaign creator and everything you make is day 1 purchase for me. Clearly yours is a neverending bug fixing job though, hopefully ED will come up with a more powerful/less buggy mission editor some day.