Edit: This bug is beginning to make me angry.
This bug started happening today and has never happened to me before, I’ve had others test it and so far it won’t work for them either. The model won’t resize properly and goes pretty much insane on us.
I don’t really understand the post and it could probably be better explained, though if this was just you working around the bug, that doesn’t solve the issue of this thread. The bug reports section isn’t about solving bugs by working around them, it’s for getting bugs fixed. By marking the thread as solved, it’s very easy for the mods to just skip this thread, while no one else is able to post a duplicate thread.
If there is a bug and it isn’t solved, please unmark this post as the solution.
Also worth noting that we can’t generate good collision geometry for meshes with 0 thickness.
There’s still a valid use case for using meshes like this with collisions disabled though. Filing a ticket to fix the scale tool for parts like this and warn when importing them.