With BACKSPACE or DELETE keys, it is very hard or impossible to remove formatting left after deleting a text.

[Jakub Ś]

This ticket is a continuation of #8439

1. Clear editor contents
2. Type "test"
3. Press cmd+a on Mac or crtl+a on Win
4. Click bold or italic or underline
5. Text should be still selected. Press Delete key

In element's path:
Webkit shows "body p b" (#8438),
Opera and IE show "body p strong"
Firefox (just like Word) removes the formatting.

The same thing also applies to (formatting being left): Bold, underline, italic, strike, sub, sup, Font Size, Paragraph Format and Styles dropdown lists.

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Suppose you want to remove the formatting (Switching to source and back works in all cases) :
Opera: it is impossible to remove formatting using backspace, delete, or button from toolbar. This part may be related or duplicating the #6585

IE: You can’t remove formatting using backspace or delete. You can remove it by pressing appropriate toolbar option or:
Continue form step 5

6. Type some text
7. Press CRTL+A
8. Press delete

This time the formatting will be removed.

Another issue with IE is that on double-delete IE removes formatting after Bold, underline, italic, strike, sub, sup but not after Font Size, Paragraph Format and Styles dropdown lists

Webkit: You can’t remove formatting using backspace or delete. You can remove it by pressing appropriate toolbar option. There is also a special case with inline styles from Styles dropdown (E.g. Marker yellow.) which are removed on pressing Delete key in Webkit.

[Jakub Ś]

I have decided to refresh this ticket and as a result I have come up with these two #13224, #13225.

I'm closing this one as duplicate.