In this position, my opponent (white) has 1.4 seconds on the clock. After the move, he has 10.5 seconds. https://lichess.org/game/D0csEr07/black#84
I was playing the game on my phone (Lichess Android App) and thought it might be a connection/phone issue. But on the analysis board on the website, which I believe shows the ground-truth times, it shows the same.
How can this happen? Or what happened there? The game chat also doesn't show that I accidentally granted an additional 15 seconds, so where does the sudden time jump come from?
@Old-Shatterhand lichess was restarted, time was added