Caps lock isn't working correcting when using Pinyin IME on MacOS

Ah I wasn't reproducing the right thing, this appears to be specific behavior of Chinese IMEs. Repro:

1. Enable PinYin IME
2. Type (Chinese auto completions appear)
3. Caps lock on
4. Type - This should be lowercase in the terminal but it's uppercase

VS Code issue: https://github.com/microsoft/vscode/issues/69367