Ctrl+left click does nothing for me, but I was able to brute force it using the onscreen touchpad in conjunction with my laptop touchscreen.
Have you considered a "movement" mode vs a "drag star" mode, similar to Codemount and Automount?
So glad I found this on Itch! I had it on Kartridge (Kongregate's failed desktop launcher) and when Kartridge was shutdown in the week I didn't check it, I thought I would never be able to find and play Trail Mix again! (It is unbelievably difficult to google "Trail Mix" and get the results you want)