Excavators and trucks constantly getting stuck due to landslide

Issue description

While performing mining operations at a large cliff landslides are frequent occurances. unfotunately the default behaviour of the vehicles beneath them is to remain inplace and float to the top of the ground as it rises beneath them. This inevatably leaves the vehicles stuck and no attempt is made by them to return to a sensible flat terrain. Vehicles will then remain there until another vehicle tries to reach them (i.e. a fuel tanker or a dump truck if there are any that survived the landslide) at which point an alert is raised to the player that a vehical can't reach its target. The only way to then resolve this issue is to use unity to recover the stuck vehicle. The problem is that this happens ALL THE TIME. meaning I am constantly having to recover vehicles which causes a lot of frustration to an otherwise great game. Can you please add the ability for the vehicles to work their way back to flat ground if they find themselves on lanslide terrain. Thanks

Reproduction steps

see above

Game version and build number

v0.6.4d b343

Operating system

Windows

This issue is still not fixed after 1 1/2 years and, frankly said, horribly annoying. I am playing your experimental map (the most difficult one) and well, it's next to unplayable for me. The most logical way to get the ressources up those mountains is just to razer through all the terrain on the basic height level. It takes time, but nothing 30 mega excavators can't handle. Unfortunately the game just CAN'T handle the resulting big landslides. The mega excavators keep digging while the landslide is happening. This ALWAYS results in excavators and trucks getting stuck. It is unbearable that I have to click 50 vehicles every 10 minutes to recover them. I can't even window-select all of them. I have to click on every single vehicle.... This is so frustrating and a total fun killer....

This one's annoying for me too. My mines have very wide cliff faces, so a landslide basically never involves all excavators, only one or two- but the excavators get stuck in a "getting unstuck" state, since the landslide moved them too far from valid land (the trucks always seem to escape without an issue, I'm only ever having to recover excavators). But in that "getting unstuck" state, the excavator's engine is still running, so it runs out of diesel- and the fuel truck can't reach it, so it just... sits at the bottom of the hill, waiting for nothing, so my first warning is when all the other excavators run out of fuel.

This only seems to happen with very deep mines, or in my case, cutting down a very tall mountain.

Happening on Update 4.1 | v0.8.3a (b578).

This particular landslide is one of the tamer ones this mine has produced.