Exactly.
SUSE takes snapshots before packages are installed. The package manager cannot tell if the disk will fill up as a result because on Btrfs the `df` command lies.
If its Btrfs root fills up and the OS writes to it, it 100% will self-destruct, and the `btrfs-repair` tool (`fsck` replacement) cannot fix drives and usually makes the corruption worse and renders the drive unreadable.
This is why in the earlier thread about swapfiles...
https://news.ycombinator.com/item?id=49618087
... I advised 2 commenters not to recommend keeping the OS and data in a single big volume. I got downvoted for it. I was rude. Well, I was, but I stand by my comments even though I'm sorry for my tone when I made them.