[FF] The cursor disappears from the editor after dragging an image

[James]

Steps to reproduce the defect:

1. Open up the Ajax sample.
2. Type a line of text and press enter.
3. Insert an image.
4. Place the cursor over the image and hold down the left mouse button to drag the image downwards until the arrow cursor is replaced by an image similar to this ø.
5. Now release the left mouse button.
6. Click back into the line of text that you typed.

Expected: The cursor will appear flashing in the same place that you clicked in the text.

Actual: The cursor does not appear at all.

[Krzysztof Studnik]

• Confirmed: After trying above steps, cursor stops blinking, but entering text is possible.
• When focus is out of CKEditor, and back ti edit area, cursor is blinking again.