Can confirm number 2 has happened to me (the hydraulics making me go higher) quite a few times.
Number 3 has happened to me a few times as well, a fix would be to just "auto destroy" and not allow the spawning of vehicles with hp below 250.0 (which would force an insurance claim).
Number 13 is just satchels in general, they do not sync properly, next time when you have the detonator equipped, spam the fire button 5+ times and it should sync a bit better.
Climbed to death is a Engine bug, there is always a chance to die from climbing short objects when playing above 30fps