Webkit changes strong tags to b when deleting formatted text.

[Jakub Ś]

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

Result: In elements path strong tag is changed to b.
The same thing applies to other tags:
strong to b
em to i
sub, sup to styled span

#9998 is the main ticket handling Webkit issues related to backspace.

[Jakub Ś]

#9909 was marked as duplicate.

[Jakub Ś]

Similar ticket with styled span and font tag was described here #8082

[Jakub Ś]

This issue can now only be reproduced in Safari 5 for which we have no intention of introducing a fix.

I'm closing this issue as "won't fix" and I have opened another 2 issues related to these problems: #13224, #13225.