Strava issue

A couple times I've stopped during a ride and discovered that my phone isn't in sleep mode but instead is showing Safari--thus draining the battery.

It appeared Strava was attempting to do an update or sign on via the browser.

The first time it also recorded the ride in progress. But yesterday it wasn't recording anything.

I closed Safari and rode for about 10 minutes. Made another stop and checked Strava again. The screen was completely black.

When I got home and fiddled with it I was able to post the ride. It had only recorded 0.1 miles out of 30, and classified it as a run.

Has anyone else had this happen?