SOME ship drills cannot mine boulders
So, this seems to be a similar issue to some that have been reported, but with a catch:
In the save file attached, I have two vehicles in front of a boulder. The ROVER is one that was built (scenario is Splitsie's Survival Impossible with some additional mods added).
This rover is, suddenly, unable to mine boulders. It appears to be able to mine snow and rock just fine, but not boulders.
The yellow Atmospheric Miner was spawned in using Creative mode once the bug happened. It is able to mine the boulder just fine.
I attempted to copy/paste and cut/paste the rover, remove and re-add the drills, etc, no change... it is completely bugged.
This is probably the fifth or sixth time I have run into this sort of issue in Single Player, ranging from vanilla, no mods, all the way to mods that change resource spawning and add ores.
Keen, please dig into this - it is making the game nigh-unplayable!