I am playing on the PS5, So I am on patch 1.5.
I managed to take out the boss before getting to the van, though after getting to the van I did end up triggering the lock down and now can't seem to get out of the mall or into the cinema. I have tried to save and reload in front of the door on the second floor, also with an exit to main menu, app restart, and console restart and both doors appear to be locked. I did trigger Placide unlocking a door on the first floor and telling me to head up to the second floor but even after that both doors are still closed. I have found a few doors I can open to but they need 10 body and I only have 8 and another door with a code lock but I have no clue if I had found a shard with the combo. Thankfully it does look like I had two quick saves before so I was able to load one of those after a but of running around the place.