Problem:
Sometimes, my mouse left button behaves like right mouse button and e.g triggers context menu when click on text.
Steps to reproduce:
It is not reproducible, at least I don't know how to reproduce it.
I noticed it will happen more often when I didn't restart my mac for a day.
My workarounds:
Restart Better Touch Tool (sometimes it fixes it for a day or two, sometimes just for few minutes)
Restart computer (sometimes it fixes it for a day or two)
Unplug and plug USB to mouse device. (helps just for few minutes)
Other information:
MacBook Pro (Retina, 13-inch, Early 2015)
MacOs Mojave 10.14.5
BTT version: 3.149
Edit 26.08.2019
Now the problem occurs also with built in trackpad
Here you can see result of few left clicks with my mouse in EventViewer: