Unfortunately, I can't do anything about that. I don't think it's an issue at all. Once you start typing after "-" the formatting is back to normal.
Please, use GitHub for reporting issues.
The following video shows unexpected behaviour when I want to make a list of something:
https://www.screencast.com/t/4QT0iCdxi1
I press ":", then "enter", then "-" then "space"
Unfortunately, I can't do anything about that. I don't think it's an issue at all. Once you start typing after "-" the formatting is back to normal.
Please, use GitHub for reporting issues.