For more information see here Bug Report Template Build: 1.9.4 4019 Mode: MP SERVER NAME: all If applicable: Reproducibility: ++ Severity: major Description: When the enemy ship's generators are destroyed, but the core still exists - it makes micro-movements, and therefore it is IMPOSSIBLE for the Character to pass through the doors, fly over the railing, I can't even PASS THROUGH THE OPEN HANGAR GATES - because the ship makes micro- movement (!) Steps to Reproduce: 1) find any enemy ship 2) destroy the generators, but do not destroy the core 3) when this ship is spinning slowly - try to go through any doors, hangar gates. railings and fences, elevator blocks == you must run into an "invisible wall" when trying to go through the doors (!) Screenshots, Crash Logs, any other Relevant Information or Download links:
My understanding is that it has an invisible wall because you haven't disabled the ship by destroying the thrusters which is the intended way.
I'm pretty sure this is a known issue. Very often, AI ships, even if they look like they're stopped, are still moving just a tiny bit. This causes some goofy collision bug where you can't get inside or even multitool the thing properly. The workaround is to either shoot all the rear-facing thrusters, or place your own core and then turn off thrusters.