Great game, slightly annoying bug

Its a great game, I really enjoy it, however I tend to have the occasional bug that when I select a number to put in to a square, it counts it as wrong, then I have to go back and select it into the same spot and it will take the number. Now this has happened a number of times, so I know Im not fat-fingering the numbers... great otherwise!

Matslgzlvxkocy about ▻Sudoku, v4.6