Hi,
I'm very interested to learn if you have trouble with list items disappearing on Windows. The most likely place for this to happen is in the list at the top left of the main window. What you might see is list items not drawing when you expand a list item, leaving blank spaces between other list items, something like that. The list items will usually redraw properly if you click on the blank areas.
Please only respond to the poll if you do have this problem.
Regards,
Jo