Pre Moving problem?

So since the time I've been playing 1 minute bullet games today, I've been encountering a weird problem that had happened consistently for the past 4-5 games that I played. Towards the middle progress of the game, at one point when I make my pre-move, and then right after my opponent plays his move, some sort of glitch- which could either be a technical site problem or something im not sure of, but some sort of glitch happens where even after my move is made after my opponents move, its my time that is still ticking and running. It seems that the pre-moving is a little sluggish today for some reason and its not processing through smoothly, the board is resetting to a previous position suddenly where my time starts running again when its my opponents turn to play. What is going on?