I currently run DisplayFusion Pro 8.0 and Windows 10 Pro version 1607 build 14393.51

When I still had Windows 8.1 Pro I could scroll the selection through the Alt+Tab handler with mouse wheel (instead of pressing Tab multiple times) while holding Alt; after upgrading to Windows 10 Pro (v. 1511) the cursor had to be on the switcher itself to scroll. After the update to DF version 8 the mouse wheel does not work for selecting apps