Arrow rights always triggers next space

I have set “moving between spaces” to CTRL+Shift+Arrow keys. However, in any application, if I single click the right arrow button a space switch is triggered to the right.

This looks like a bug to me. Is there anything I can check on regarding this issue?

macOS Mojave, 10.14.6, TotalSpaces2 2.8.5

When I change the keybindings for switching spaces away from using the arrow keys, the issue disappears. Still looks like bug to me.