• VSCode Version: 1.21.0
• OS Version: macOS 10.13.1

Steps to Reproduce:

1. Install Google Japanese Input https://www.google.co.jp/intl/ja/ime/
2. Activate it
3. Open a new VSCode instance
4. Type konnnichiha on keyboard, then hit enter, and do it again a few times
5. Expected: the suggestions should never overlap w/ text. Actual: the suggestions overlap w/ text.

See the GIF:

Does this issue occur when all extensions are disabled?: Yes

Notes:

This is not an issue with the default Japanese IME that comes w/ macOS.

Update (Sep 27, 2018): Workaround

This setting seems to fix the issue. (You'll lose some functionalities)