Hello there, and sorry for bumping a year-old topic; but I have the same exact problem, in UE 5.3:
I was modelling a cavern, where the player will be flying around inside of it (like in good old Descent). So I’ve created two meshes for the cavern shell, one for rendering, and one for collision. The rendering mesh was set to use collision mesh as its complex collider like this:
However, inside the editor & in game, I get this:
The above solution, placing the render mesh and collision mesh on top of each other, does work; but it sounds like a bit stop-gap solution for me, especially when it comes to scaling the project scope up, and creating labyrinthine cavern systems, etc. While it is possible to solve this problem with blueprints, I still have to ask: Why the option to set custom complex meshes still doesn’t work as intended? It would help a lot on creating really complex geometry, where setting up UCX hulls wouldn’t be as feasible? I’m curious.
If it does work, but we’re missing something, please let us know!
And thanks in advance…