I'm not sure as to how long ago you did this but it moves workspaces dynamically now when you unplug/replug monitors
I used to do this quite frequently, disabling laptop screen when plugged into monitors
That said it still has a stroke from time to time just not always
Ah right, probably not a new thing then
Switching monitor setups has seemed pretty unstable in hyprland to me but I assumed that was more to do with Nvidia than anything