During my last run Pear (on my Samsung S6) halted (multiple time) because it could not find a GPS signal.....this has never happened to me over the 4 months I have been using the app. This was puzzling because the GPS showed 3 bars and other applications seemed able to maintain a GPS connection. I did notice that if I didn't dim the display (which I assumes puts app into the background) the issue seemed to be less "frequent".
I know that Android was recently updated. I have also heard of other apps having problems running in the background. I am therefore wondering if there is an issue with Pear.