another related issue would be using one of the 4 seat submarines, spawn using the editor over water with an elevation of 1000 with you as the player.

the submarine will fall right into the ocean without taking any damage and the units inside won't even put on their rebreathers.

Mass closing ancient tickets with no activity for > 12 months; assume fixed or too trivial.

If this issue is still relevant in current dev build, please re-post.