DragonRoco

That is intentional, the peagsus engine generates enough thrust at idle to cause the aircraft to roll at a decent speed. You can either use the park brakes or swivel the nozzles down to stop this. The patch note referred to the aircraft jumping forward when the chocks are removed, even when the engine is off.

The Pytor doesn't seem to experience the same issue. I've attached a track. I'm not going to go through and test all the ships, but the hitbox behavior appears to be contained to the Chinese ships. This was initally picked up due to anti ship missile phasing through the ship when damaged, something which doesn't happen on the Russian or US ships. PytorHitbox.trk

Unfortunately this still appears to be an issue in the latest open beta (2.5.6.57949), but the hitbox is removed later, I got up to a total of ~85% total damage before the hit box stopped. Naturally that took more attack runs. Track attached and missing hit box confirmed by flying through the damaged section as before. I was bombing the same part of the ship every time, other parts still had their damage model. ShipHitboxNewPatch.trk

I've attached a track showing this issue. This was on the latest open beta (2.5.6.57264). I drop three passes of a harrier fully loaded with Mk82 on the 052C and get it to around 33% damage. I try to fly through the ship every time, but only when the damage is greater than 33% can I fly through it. I shortly crash afterwards, but that is because I hit the water. It appears to be the 'second' damage state where the large holes appear that causes the hit box to go missing. I didn't show it in the track, but if you try to damage the ship further the bombs explode on the water and only splash damage affects the ship, doing ~1% damage every time, down from the 12% it does with a working hitbox. I haven't tested the other ships, but I have heard of issues with the 052B and C and the 054A. ShipHitbox.trk