Can not select element after setting font size on it.

[Artur Delura]

Browsers: Chrome

1. Open editor with empty content or just remove existing one.
2. Set some font size by clicking propper dropdown.
3. Type some text.
4. Try to make selection in the middle for created text.

Actual result: Making selection is impossible.

Note 1: It's possible to make selection from middle to very beginning.

Note 2: After making selection using method from Note 1 and pressing Ctrl key selection is also gone. It might be related.

[Jakub Ś]

I was able to reproduce this problem from CKEditor 4.4.4 in Blink and Webkit browsers. It seems we have recent regression.