mysteriously gained 5+ minutes on 2nd move of the game

hit a weird bug playing a 2+1 on mobile browser, not sure what happened, but by move 3 I had 7+ minutes on the clock. refreshed multiple times and clicked out and then back into the game but it looked to be server end. still had 7+ minutes by the end of the game. the extra time shows up on move 3 on the move times view of the analysis board too.

Check your game chat. Opponent probably clicked +15s twenty times.

I don't see anything in the game chat (and didn't during the game either - I kept looking since was expecting to see a chat message along the lines of "what happened to your clock just now"). does that info time out? or maybe it doesn't show on mobile browser? is there anywhere else I can see that info?

and also I remember seeing my clock looking glitchey and rolling up rapidly and smoothly 1s at a time rather than in discrete chunks, and only stopping when I took some action (can't remember exactly what since I was a bit freaked out, probably refreshed the page). unless this is how that feature is visually implemented? would be an odd choice