I am probably just messing something up, since everything else seems to be working like a dream. However, my toasts and portal will not show up, no matter the configuration or setup that I seem to use. Even the base example from the website (and nothing else in the component) appears to work.
Following through it seems that Toast.Show() (for the toast) isn't being rendered. Though it still crashes if something that should be defined is undefined.
I am happy to provide more information as needed, and sorry if this is a known issue and I have just missed it on the forums/threads.