IE: Can't remove inline styles with Backspace and Delete needs to be pressed twice.

[Jakub Ś]

1. Open replacebycode sample and press New Page command
2. Type some text
3. Click Ctrl+A and Ctrl+B (Don't press ctrl+B before typing -> it works then)
4. Press Backspace any number of times you want. Text is removed but element's path is still showing "body p strong"

---

4. Instead of Backspace press Delete. The first key press removes only text. Second key press removes the formatting.

Problem can be reproduced from CKEditor 3.0 in IE8-11.

[Jakub Ś]

Other tickets relatedtto that problem: #13820, #12139, #13504, #5026 (Test 2), #13224, #13830.