i noticed a comment about this on the patch notes but decided to bring it here im playing on a mp server and my sv and hv thrusters are showing blocked even though there isnt anything surrounding them.. had a similar issue on one of my cv's (jrandalls athion starter from the astra modular collection) but that was useable after moving the thrusters about a bit the hv is one of the stock bps an my sv is from workshop named the pangolin (cant remember the author) i am playing the refined eden scenario
You can read here about it: Not a bug - Front Thrusters XL dont work | Empyrion – Galactic Survival - Community Forums (empyriononline.com)