Now? Haven't they always been?
> simply are not cutting it for me.
Do you mind explaining why? I had some problems with them initially (when they first went into production FF), but some small tweaks since then and they've mostly worked exactly as I would want.
The only complaints I have are Google, which I try to relegate to a container, making it really hard to open stuff in different containers because of how they send links in Gmail through a redirect to protect referrer info and making it hard to have separate Google accounts in different tabs (which i could probably resolve mos the issues by not assigning Google to a container by default so some of the switching is more smooth, but ick), and LastPass, which I only really need for work (as I use FF sync for my passwords).
LastPass doesn't seem to be able to deal with containers and work SSO which auto redirects to a container, so I can't even sign in with LastPass without tweaking container domain assignments, and toggling that stuff every time I want to log in is ridiculous.
Other than those, everything works pretty smoothly, IMO. I have 18 containers, of which 6-7 see consistent heavy use, and the most rest are for occasional things and are used once every few days.