We have seen this bug on both enterprise 4.7 and GPL

Edit a new object
Click in the EZOE
Type a sentence and hit return
Type another sentence and hit return

Put your cursor at the end of the first sentence and hit DEL key
and watch sentence 2 get wrapped in paragraph.span and become tiny.

Undo

Put your cursor at the beginning of the second sentence and hit BACKSPACE key
and watch sentence 2 get wrapped in paragraph.span and become tiny.

<p>This is sentence one.<span style="font-size: 0.8em;">This is sentence two.</span></p>

As you can see from the raw HTML from Chrome inspector it's actually putting a 0.8em

Editors should be able to have a paragraph wrapping multiple lines..

The reason I marked this as critical is becuase we have 3 clients that have complained about this bug and we need your assistance to address.

Thank you