@Richardus.Raymaker on the latest dev build, 5324, i’m able to import an asset from my ATP w/ exact collisions and rotate it as expected. i’m able to change collision mode to one hull, hull per submesh, etc and it rotates as expected at each. could be a bug from an earlier build. if you don’t mind trying your asset w/ the most recent dev build http://highfidelity.io/dev-download , that would be helpful.
could you tell more about your setup? how are you rotating (rotation property, angular velocity, etc). what model are you using? are you on your localhost or another domain?
re: the message – bummer that it gets cut off; what’s your screen resolution / os-level font size settings / size of the window?? it should appear all the time, if it doesn’t we need to fix it. it should look like this