>>Eveything was loaded except the sidebar. Now the sidebar is visible. But if I press F5 the sidebar disappears, pressing the refresh button fixes this.
>
>Yes, if you press F5, it's like log in in again and that could make it to not refresh. The refresh button is the only safe way to refresh manually.

I notice that the "number of new messages" does not show the correct number after I press the refresh button.