This issue is similar to an issue I discussed with support via email in December of 2017.
4 desktops, 2x2. Finder on 1. Chrome on 2. 3 & 4, empty. Mission Control set to top-right hot corner.
Use Mission Control to select the desktop containing Finder. TotalSpaces switches to it. Use Mission Control to select an empty desktop. TotalSpaces switches to it. TotalSpaces then auto-switches back to the desktop with Finder.
Sometimes, the same behavior happens when first selecting the desktop with Chrome instead of Finder. This behavior is not consistent. The Finder-related behavior appears to be.
Any ideas what is going on?