Wheeled Vehicle ignoring the physics of a mesh

I have an issue with my Wheeled Vehicle collisions, and it’s hard to put into words - so here’s a video:

I can’t tell what’s going on here. I have every physics debug view I can find on - and there shouldn’t be anything colliding here.

One car is just the Skeletal Mesh being dropped to see if the mesh has proper collision. The other is the same mesh as a WheeledVehicle blueprint, using the mesh, camera boom, and a camera. Nothing fancy, except the extravagant collisions. What on earth is going on here to make it just ignore the physics of the mesh entirely and flop into the ground?

I’m still using 4.1.1
I’ve posted the same thing into the forums, and was told by JamesG to just wait for the 4.2 update.

Which release are you using. Are you still on 4.1 or are you using latest on github?

I will definitely do that as soon as I get home from work!

4.2 is out now (literally in the past couple of hours, so you just missed it), could you try updating to that and then let us know if it is still an issue.

4.2 Resolved everything.

What’s the reason?