a new feature added in 2.0 is the ability to drive (certain) vehicles remotely. this includes trains, which are already aligned to their tracks, but also tanks. this lets you do things such as attacking biter nests on nauvis while you're off-planet, or ferry your vehicle over to you (would be more useful if you could remote drive cars as they're faster but...) to allow you to move faster.
however, while vehicle snap works just fine when driving normally, driving from the map view doesn't trigger vehicle snap, which means remote driving your tank runs the risk of being slightly off-angle and bulldozing straight through your production facilities instead of driving harmlessly next to them. if you're got pipelines all over the place, driving is already a hazard as it is, and the lack of vehicle snapping makes it worse.
I wasn't sure whether to mark this as a "bug" or a "suggestion for improvement" as you might not have even known this feature was added in 2.0, but since it's not* following expected usage I figured I'd just mark it as a bug for now.