Noticed I had a HR gap today. Could not figure it out as I did not take the watch off. But I do remember accidentally selecting Pool Swim. Tried again and have noticed if you select pool swim and then back out of the activity the HR gets stuck in measuring mode for what appears to be 10mins. Have to reset the watch to correct.
I did not notice this happening when doing an actual swim and finishing and saving/recording the event.
Anyone else notice this issue?