Dashes are inserted when using the unordered list formatting

[julian-wls]

Describe the bug

When creating an unordered list dashes are inserted when going back to the last point.

To Reproduce
Steps to reproduce the behavior:

1. Go to any channel
2. Select the unordered list formatting
3. Start typing and creating new points
4. Stop creating points and type text below
5. Go back to the last point and start typing
6. Verify, that "-" are inserted in the text while typing

Expected behavior
When continuing editing the list there should be no dashes inserted, only after a return.

Screenrecording

Bug.mp4

Notes

This has only verified on the unordered list, but most likely impacts ordered lists, too.