Tabbing and Viewing Workbooks on Two Monitors

I often have two workbooks up on two monitors. And of course I have a bunch of other programs open. I used to struggle to view both workbooks at the same time. Using Ctrl + TAB hides the first one as it shows the second one. Two workbooks tiled side-by-side on one monitor have the same issue. The solution I’ve found is to tab “backwards” using Shift + Ctrl + TAB.

The Ctrl + TAB Problem

Below I’m clicking Ctrl + TAB. As soon as the next workbook appears the first one goes away. It seems to go behind the Windows Explorer Window:

Ctrl + TAB

Shift + Ctrl + TAB to the Rescue

Below, I’m using Shift + Ctrl + TAB to cycle “backwards” through the workbooks. For whatever reason, now the first workbook stays visible, and I can see both:

Shift + Ctrl + TAB

This is one of my favorite keyboard tricks. Any explanations of what’s going on would be greatly appreciated, as would any better solutions.