How to disable "copy unique clips"

I edit podcasts on audition. When I use a wired mouse at my office I have zero issues. Ocassionally I edit from my laptop at home. My setup at home has a wireless mouse. This causes a weird function I cannot seem to get rid of. I select a track in the multitrack editor, then if my mouse is over the track, it momentairly makes my mouse cursor look like a double select tool. The arrows are slightly overlapped; one is black and one is white. If I click when the mouse is in this function it duplicates the track under itself. The issue I am having is that I do a lot of selecting of everything to the right and moving it to the left. If I click too quickly, I end up making a copy of the track and have to ctl+z. For the life of me I cannot find this tool anywhere or how to disable it. Any help would be amazing.