Might the issue be cause by the fact, that my character is composed from different parts ? (legs, chest, arms etc) ?
Edit2:
I figured it out. When trying to use APEX cloth on Slave componen it won’t work. All kinds of crazy things happen.
But when I put my mesh with cloth as master component which drives slaves, it works.
I left this open, because I think it is bug, and cloth should work regardless of whether it is attached to slave or master.
Any updates on this issue ? It’s not world breaking, but it’s very annoying, and i haven’t be able to work around other, than putting clothed mesh as master skeletal mesh, which is hardly good option, because there is no way I know which parts of meshes might have clothing, while I have clearly defined amount of character parts, and slots for them.
I wasn’t able to reproduce the look that you had in the image though. When I went into to setup the character I applied the cloth to element 5. You had mentioned you could not see which element applies to which part of the mesh. You can see the individual parts that each element applies to by clicking the “highlight” check box under “Element [X]” name.
Bump. It seems there is still issue with APEX clothing on modular characters, using single master pose component.
If the mesh with clothing, is not assigned as master pose component, it will break in various more or less funny ways.