Weird cursor behavior for Math Formula when using backspace

[whykushal93]

When backspace is pressed after a formula, the cursor goes to the end of the line. Pressing backspace again does the intended action, but still think this is a bug. See the GIF below.

Steps for Reproduction

1. Visit quilljs.com
2. In the editor, click on a line with a math formula.
3. The cursor should appear after the formula with some white-space in between.
4. Press backspace once.

Expected behavior:
The cursor removes the white-space or deletes the formula

Actual behavior:
The cursor moves to the end of the line.

Platforms:
Windows, Chrome
Quill Version: 1.1.10

[c-w]

Sounds like the same issue as #1181.

[jhchen]

Yes this is the same issue.