I have been running Outlook 2011 for almost 4 months without an issue until yesterday.

When I am in my inbox I like to have the viewing pane on the bottom. As of yesterday every time I leave my inbox then come back to it, the viewing pane is hiding and I have to go through the options or shortcut to bring it back. It is very annoying.

I have not installed any updates or new software recently. Can anyone help with this?