Keyboard shortcuts accidentally activating window snapping features

Using 6.594 on Tahoe 26.6. For some reason snapping a window to a left or right third is getting activated in Finder both by the keyboard shortcut I have set (shift + ctrl + right/left arrow) and by another keyboard shortcut that is NOT set (shift + cmd + right/left arrow). When I disable the action the erroneous activation stops. Can this be replicated by anyone else? I attach a screenshot of my window snapping settings in case that is useful.