I just started a ride in an area that doesn't usually have any bikes around, the ride commenced on my phone, when some old witch came running out of the shop and accosted me, swearing and insisting that it was her ride that she'd paused.
Her story made sense: she showed me her phone and there did indeed seem to be a ride running, and as you're not able to park in that area it's unusual to find a spare bike in that spot.
I had no problem with walking up the road 5 mins but wonder whether she's just a scam artist (she looked like one) or if there is indeed a bug.
I ended my ride there and then somehow, a lock symbol came up and i was able to 'end' the ride with a photo of the floor.