This one is actually fixed already and planned to be in the 4.13.1 hotfix once that is pushed live in the next week or two.
This issue also affects more than just OBJ as it affects FBX for some from some programs like Sketchup. For me it only gave an issue with OBJ files from 3DS Max but not FBX. I think others had pointed to some software other than these two that was giving the same issue as well.
Should the issue continue after the hotfix please post back here and we’ll follow up!
Thanks!
Tim