My High Sierra Mac is interpreting any left mouse click as a middle click. So that means it won't switch context to a desired window with a left click, and all web links open in a background tab, as if I were holding the Cmd key when clicking (which I'm not). Here's what I've tried:
- Using a different mouse. My normal is the magic mouse, also tried an M720 Logitech over bluetooth. Both have the same issue.
- Turning off my bluetooth keyboard. I thought maybe it was messed up, and telling the Mac that the Cmd was being held down. Turning it off had no effect.
- Restarting the Mac. This didn't help.
- Reviewing mouse settings. Nothing I changed seemed to help. Even tried reversing the left/right button functionality, but not difference.
I'm out of ideas here. What can I try to resolve it?