My #Logitech MX vertical #mouse has a failing microswitch under the left click button. This is a mouse which has a millions of clicks rating & there’s no way I am close to the durability limit. I also treat this mouse well & keep it clean & away from spill risks etc. Going to be contacting Logitech & demanding a replacement. It’s the switches that go bad because they’re not spec’d correctly. Not very #repairable in my situation, sadly.