Hi , my project has started running into this issue as well and it’s hampering productivity quite a bit as I essentially can’t hot-reload anymore.
Hoping that community interest on this can be bumped up. I see that UE-35710 has been backlogged while UE-45028 is still open; hopeful that one of those will be taken up.
Some additional info: I’ve used custom HISMs for a very long time now but never had this issue until recently. If I mange to figure out what triggered this issue I’ll post back with a comment.