Default Font Restoration: Invalid Size

[jleandroperez]

Expected behavior

After entering a H1 snippet and hitting newline, the default font's size should get restored.

Actual behavior

A smaller font size is restored.

Steps to reproduce the behavior

1. Launch the empty editor
2. Toggle H1
3. Enter Hello + hit newline
4. Enter World

As a result, the font size used in World will be smaller than expected. Switch to HTML mode, and back to Rich Mode: note that the World word will be slightly bigger.