There is a bug that occurs if you're playing in web browsers on your phone.
What happens is that when the opponent activates the timer, I lose my time even when I am unable to make any movement, while Pokémon is performing the "animation" of the moves , for example.
This has happened several times, and I always end up losing through inactivity, even though I have not been inactive.
I do not have any screenshot or replay, as it would be frustrating to go through it again, but it's something easy to verify anyway.
It would be good if you could fixed this.