Please see the attached screenshot:
Seems to happen on clean installations of Windows 10 Redstone. Upgrades don't seem to have this problem (so far).
Enabling/disabling the ribbon tab seems to fix the problem, but not consistently.
Would any users of ZIPmagic on Windows 10 Redstone care to share their feedback on:
1) What File Explorer UI settings they have,
2) Whether these settings solve this issue?