IE: Pasting a list after applying font-size to a paragraph wraps list-items in spans

[Jakub Ś]

Steps to reproduce:

1. Go to any sample (using IE)
2. Copy the bullets from the attached document
3. Write out, "Hello World"
4. Select "Hello World" and apply a font-size of 14
5. Place your cursor at the end of the line, (Hello World^), and press the enter key to create a new line (Element's path is showing body p span)
6. Paste the bullets using the CTRL+V keyboard shortcut.

Result: All list items are wrapped in span-tags with font-size 14.

The issue has been reproducible from CKEditor 3.1 (In earlier versions results were not even close to the ones presented here)

NOTE:All browsers copy span to another line but only IE applies this span to inline elements or text

[Jakub Ś]

The same thing is happening for E.g. table or header (see attachment).

[Jakub Ś]

Actually list items are wrapped in spans when you switch to source mode.
Before switching block element (table/heading/list) is wrapped in inline span (see IE8.png)

This causes extra problems in IE8 and IE9 when following these steps:

1. Copy list from docx
2. Clear editor contents with Click, CRTL+A, Backspace
3. Type hello world, select it SHIFT+Home and apply font 14px
4. Unselect with right arrow
5. Paste list with CRTL+V
6. Press Backspace

Result:
IE9 cursors jumps before getting to last list item.
IE8 last letter of last item is deleted but cursor is displayed in wrong place. Additionally after pressing backspace CRTL+A won't work.

[Jakub Ś]

TC from IE8 - ​http://www.mediafire.com/?ua5fmd215bowj2j

[Jakub Ś]

The same root of the problem (pasting block into inline in IE) is applicable for other tickets: #9207, #8294, #9740. I think they all can be fixed with one patch.