Move Tool Suddenly Acting Strangely

I've been using the newest version for a while and suddenly, like out of nowhere, the move tool stops dragging things and instead draws a marquee selection. And no, I don't want to turn off auto-select on the tool options, because that means I can't click a layer and just move it anymore. If adobe has suddenly reworked this tool for no reason at all, and i can't click then drag a layer anymore, that is a massive blow to my current workflow/muscle memory.

In the attached image I would have previously been able to just drag that central image to the side, but now it just draws a marquee. I have the move (v) tool selected in the toolbar.