One of the buttons laps the stopwatch, the other resets the entire session clearing all lap markers and stopping the counter. Better not forget which is which, especially given that you’re probably timing something in the physical world not paying much attention to your phone…
Yeah the AOSP one lineage uses which I assume is the same one this person was using has the same button layout as OP’s when it’s actually running
Lineage OS does its own thing actually. The Google one is proprietary and the AOSP one is abandoned.
Oh interesting, huh