when you download an update, you will have 3 deployments for a short while, until you shutdown once you boot up you will have 2 deployments again with the oldest one deleted (unless you pinned a specific deployment, then that one is also kept)
just overlay plasma-workspace-x11plasma-workspace-x11 it will bring X11 back. I'm just using it bc I need input-leap for work and plasma does not have the necessary support for libei yet.