Sometimes while doing inventory management in the mod, there's a chance gzdoom will freeze up completely out of the blue. I haven't been able to figure out what exactly causes this, as the mod only provides compiled ACS.
Here's a stack trace, here. From what I've been able to tell in gdb, DBaseStatusBar::DetachMessage enters an infinite loop. I'd send in a full coredump but it's 5GB in size. Even compressed it's still supermassive.
I'm linking a save here. Just open the inventory and hover over some items, move them around, etc. Eventually the freeze should happen.