Line tool creates multiple instances
Recently the line tool and all the tools inside it (arc, grid, etc) create multiple instances when I use them. It's as if I was holding the tilde key, but I'm not and it's not stuck. I don't have the same problem with the marquee or circle tool. Even if I hold Shift and create a straight line, many lines will be created which are not constrained to the angle I'm trying to follow.
I'm on CS6. The problem may have started after I upgraded to MacOS Sierra, but I'm not sure.
Does anybody know what's going on and how to solve it?
