I used poetry professionally for a couple of years and hit so many bugs, it was definitely not a smooth experience. Granted that was probably 3-4 years ago.
I started using poetry abiut 4 years ago and definitely hit a lot of bugs around that time, but it seems to have improved considerably. That said, my company has largely moved to uv as it does seem easier to use (particularly for devs coming from other languages).
I've occasionally run into performance issues and bugs with dependency resolution / updates. Not so much recently, but at a previous company we had a huge monorepo and I've seen it take forever.