Workout paused / segments activated without my knowledge when running in the rain

During a run last night, i found that the segments were activated without me touching the screen and the workout was paused without me knowing for about 0.5 km. I was running in the rain at the time.

I would like to lock the screen to prevent this but you can only do this with a swimming workout, not a running workout.

Has anyone else experienced this? Is there a way to prevent these options from being selected in the middle of a workout?