I play on MacBook with trackpad. (Cringe I know) Was playing single player and all of a sudden when I click to mine it does one hit then stops. So can’t break blocks anymore. I jumped on an SMP I play and controls are fine on there. Anyone know a fix?
Try resetting your controls and see if that helps. The path is Options > Controls > Reset Keys (bottom right-hand side). Try this and see if it helps. :D