in all puzzles my mouse does not react consistently.
E. g. pic-a-pix: When I click once it always used to fill the square, the second click used to mark it as empty. Now every click is a surprise: sometimes it marks as empty, sometimes as full, sometimes not at all. Te second and inevitably third click are random, too. This really hems the flow of solving puzzles.
I bought a new mouse last week, but the problem remains.
I got a new laptop recently, and the problem has started around that time. Could it be a problem in my settings? I'm using the latest firefox on windows 10.
Thx for any useful hints