My Kensington wired expert mouse left click behaves like a double click. I tried all the updates, the Kensington Konect using easy and advanced checks, changing the scrolling speed. Sometimes it's fixed temporarily, then, (in photography - my business), anytime I click on an image/file, it opens, not just highlighting. It's super annoying having to keep closing images every time I click on them and they open.
Mac mini, macOS 15.7
Unfortunately, that symptom on the Kensington Mouse is almost always caused by a failing left-click microswitch, not software. The reason it sometimes feels fixed after updates or preference changes is because debounce timing shifts slightly, masking the problem for a short while. On macOS, when the switch starts sending rapid on/off signals, Finder interprets a single press as a double-click, which is why files open instead of highlighting.
A few steps you can try before declaring the mouse faulty are:
If those tests still show double-click behavior, the switch is failing.
Unfortunately, that symptom on the Kensington Mouse is almost always caused by a failing left-click microswitch, not software. The reason it sometimes feels fixed after updates or preference changes is because debounce timing shifts slightly, masking the problem for a short while. On macOS, when the switch starts sending rapid on/off signals, Finder interprets a single press as a double-click, which is why files open instead of highlighting.
A few steps you can try before declaring the mouse faulty are:
If those tests still show double-click behavior, the switch is failing.
Tesserax thank you so much for this thoughtful reply. I did try lowering the double click speed, but the first thing I did was switch Kensington wired trackballs. I have three. They all work fine on my 2019 iMac running OS 13.7.8. That iMac does not have Kensington Konnect on it. I believe it's something to do with Sequioa. There are plenty of people with trackball questions and Mac OS software updates. I love that trackball because I can get away with some on the fly careful editing without having to pull out a Wacom tablet. It also helps with carpel tunnel. I know I'm not alone because these old trackballs are still in high demand. I just wished mine worked with the computer I'm most reliant upon now for editing.
To be clear, the left click was acting like a double click before installing Kensington Konect on the mac mini. I just installed that hoping it would help, but it didn't.
Kensington Wired Expert Mouse left click is double-clicking
