I use the Arrange by date received sorting method the majority of the time, but I have a view issue which only pops up on my Inbox and on none of my other folders.

When the message pane is at it's smallest, as I prefer it to be, the "Newest on top" column header is gone and it creates a horizontal scrollbar, which if I scroll right I can see it, or if I resize the message pane, to half the screen size, then the "Newest on top" appears.

On all my other folders, the "Newest on top" option is there all the time, irrespective of message pane size.

How can I fix this, as it's driving me insane?

Here are three screenshots, that should explain what I am experiencing.