First of all, I recently noticed that when you load a map, at least the Transport Heli and Bouncer, when placed on metal roof buildables, clip into them when they have lockers placed into them. Haven’t investigated this further, but it seems to have begun with one of the recent patches.
Second, I cannot break the stone wall in the Junkyard anymore in order to complete the “Extinguished” puzzle. I was able to do it some time ago with a handful of Rockets, but I recently didn’t succeed with 20 Rockets. I am firing the rockets at the flat piece of rock which is supposed to break.