Auto convex collision doesnt do anything

im now using 4.14.3 and its broken again. Collision is active in the lod… collision complexity is on project default… ive tried every setting in that drop down… The auto generate collision simply is not working at all. Any ideas?

Any freshley imported model simply cant use auto generate collision. Very frustrating.

Update**

I have created a new bug report here since the problem now goes way beyond not being able to auto generated convex collision… its developed into a crashable bug with repeatable steps… every time…