m312z

I had the same problem on two Harpoon mice. I fixed both by following instructions from 2FAN on this forum: Without the registry steps the older version of ICUE crashed on opening. Choose to "Force Update" the mouse firmware in ICUE, it will roll back to 0.6.70 or similar. You can then update ICUE to the latest version. It will prompt you to update the mouse again - I didn't. Both mice now work fine.

I got a replacement mouse and it worked fine for a few days. I updated the firmware in iCUE today and immediately noticed the double-clicks return. I followed the instructions on the third post of this thread from 2FAN, and rolled back the firmware to 0.5.49 (dongle) 0.6.70 (mouse) and the issue seems to be gone again. I'll be careful not to update again!

Hello all, I also just registered to add to those with the same issue. I'm using a harpoon wireless. I used this page to test: https://unixpapa.com/js/testmouse.html I hold the left button down and release it over the test area. This occasionally triggers four events: mouseup which=1 button=0 buttons=0 mousedown which=1 button=0 buttons=1 mouseup which=1 button=0 buttons=0 click which=1 button=0 buttons=0 This occurs in wireless and wired modes. Edit: it doesn't seem to happen when icue is not running. Edit 2: I spent some time testing it, and it does occur when icue is not running.