if we apply heading formatting to a list item in an Ordered/Unordered list we can't come out of the list

[satya]

To reproduce the defect

1. Open Ajax sample

2. Click on Numbers icon to start a Numbered list.

3. Type some text after the first number in the list.

4. Select the text in list item and apply any heading formatting(Heading 1 to Heading 6)

5. See that Heading formatting is applied to the list item.

6. Now press Enter, see that the next number comes up in the Ordered list

7. Press Enter one more time.

Expected Result:

The cursor should come out of the Ordered list and a new empty Paragraph should open

Actual Result:

No Matter how many times we press the Enter, the list goes on increasing and every time we press enter it is adding a new empty list item in Ordered list.

Same behaviour is also happening in the case of Bullets.

[garry.yao]

Fixed with [5292].