This particular thing has been buggy since I remember:
You can disable collision completely:
But that will make chunks fall through the floor. One workaround is to have the DM ignore Pawn by default and wrap it with a box collision. Hit the box → fracture mesh → remove the box. The DM never blocked the Pawn so it’s fine. May work for some scenarios but so far from ideal…
I haven’t played with profile names for a while; maybe it will work when called by name: