Double clicks when single click

I am having this problem now, also. At first, I thought it was just Illustrator but have since noticed the issue is constant in Photoshop too, and to a lesser extent, in InDesign. It's driving me crazy and making it such a pain to do the simplest tasks! I have a coworker with the same problem—we are using a different mouse and I have a graphics tablet. Editing mouse settings doesn't help.

Although I have made adjustments to the double click feature, it still continues. I use a track ball and a wacom tablet. Feeling it might be more of a windows 10 issue.

You might try dialing back the double click response in your OS's preferences.