Bug: on a text with bullets, pressing backspace might cause more bullets, more indentation or no removal of bullets at all

[AndroidDeveloperLB]

v1.6.7

Steps:

1. write text
2. write text with bullets
3. write text
4. write text with bullets
5. press the backspace key multiple times, till you are supposed to reach complete empty text

The bug:

1. it might cause more bullets to appear
2. It might add more indentation
3. last bullet that's shown won't be removed.

Attached video to show the issue. device-2018-03-06-152914.zip

[bikusov]

I don't know why, but most of rich text libraries have this bug :(