If there is currently running the embedded instance of forge runtime and an user attempts to add a new runtime and attempts to use it right away – then he is blocked and cannot run any commands in the console.

He would need to change the runtime back to the embedded one (in preferences) - stop it (in console view) and select the new one (in preferences) – But even by doing that - the start/stop buttons are not working properly.

Expected is that after changing the runtime it automatically restarts forge and uses the new one. This is how it worked until Beta.