Issue Overview

The bold, italic buttons etc. are not reflecting the current editor state as you move the cursor (via keyboard or clicking).

Steps to Reproduce (for bugs)

1. Create a new paragraph
2. Select one of the words and make it bold
3. Move the cursor around in that paragraph

Expected Behavior

The bold state reflects where the cursor is

Current Behavior

The bold state gets out of sync.

Possible Solution

This looks like it is also an issue with how the slot is not updating when non bubbling virtually. The related issue is #3466 . @tg-ephox is creating a PR for this fix.