Insert a Plain Text Content Control to current document.
Enter a character in the Content Control.
Undo and then Redo.
The Content Control remains in placeholder mode, which is not supposed to.
When a new line is placed right after a nbsp, the new line is ignored in the layout. This can be reproduced by importing the following HTML:
First <br/>Second
In specific cases, the box-drawing characters are not properly aligned and connected.
Observed: