Chess.com Glitches with updating the clock
Generally that happens when you get disconnected from the live server.
Are you playing on the iOS app?
what’s going on with the clock? I’m up minutes and my opponent clock ticking. Then I’m at zero and he wins. I’ve lost half a dozen games line this the past week.
clock being funny. If not fixed I’m leaving the app.
There was a bug identified with recent version of the iOS app that impacts some games. Staff have pushed a fix in version 4.7.17 that is rolling out now and should be available to you soon, if it isn't already, if you check for updates.
The game clock is crap and some players (just to win) have figure out how to stall enough to use it in their advantage with something I call the "phantom move." Your opponent never actually moves a game piece on the board, however, the game registers their non-moving piece as a move. This results in your clock continuing to count down, but their clock has only registered a tenth of a second less.