I am unable to type Chinese/Japanese using built-in input method on macOS 10.13 with Animate CC 2018.
The problem is that the input method overlay does not show up when using type tool, and hitting space key does not prompt Chinese/Japanese characters. Animate does registers keyboard inputs and types English letters.
I realize that High Sierra is not currently supported, but with 2017.X versions it was fine. I was able to rollback to 2017.5 and type Chinese/Japanese.