That may be happening because your double-click sensitivity is too high.

You can change the mouse sensitivity in the control panel on windows (i'm assuming you're using windows).

Also, if that doesn't work, you may want to do a thurough malware scan/removal on your system. I had an issue a couple months ago where my mouse would doubleclick on everything in and out of poser completely randomly, and it just continued getting progressively worse. I thought it was my mouse going bad, so I swapped it out but nothing changed. After swapping it a few times, I started investigating for malware. Did a malware bites scan 3 or 4 times and got rid of a crapton of junk, until scans showed zero infections. These are things that McAfee, Norton and MS Security Essentials never detected. Once my system was clean, my old mouse that I thought was worn out, worked just fine. 

 

~Shane