Owntrack with iBeacon recurring warning

I have enabled an iBeacon zone in owntrack matching my home zone in home assistant to improve the presence tracker. It works very good but it is spamming my logs with these messages:

2018-11-14 00:49:21 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 'g6', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542152962, 'wtst': 1541891766, 't': 'b', 'topic': 'owntracks/******/motog6/event'}
2018-11-14 00:49:35 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 's3', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542152975, 'wtst': 1541896863, 't': 'b', 'topic': 'owntracks/******/oneplus3/event'}
2018-11-14 00:49:52 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 'g6', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542152993, 'wtst': 1541891766, 't': 'b', 'topic': 'owntracks/******/motog6/event'}
2018-11-14 00:50:23 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 'g6', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542153024, 'wtst': 1541891766, 't': 'b', 'topic': 'owntracks/******/motog6/event'}
2018-11-14 00:50:54 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 'g6', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542153055, 'wtst': 1541891766, 't': 'b', 'topic': 'owntracks/******/motog6/event'}
2018-11-14 00:51:25 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 'g6', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542153086, 'wtst': 1541891766, 't': 'b', 'topic': 'owntracks/******/motog6/event'}
2018-11-14 00:51:45 WARNING (MainThread) [homeassistant.components.device_tracker.owntracks] Ignoring transition update because GPS accuracy is zero: {'_type': 'transition', 'tid': 's3', 'acc': 0.0, 'desc': '-Home', 'event': 'leave', 'lat': 0.0, 'lon': 0.0, 'tst': 1542153105, 'wtst': 1541896863, 't': 'b', 'topic': 'owntracks/******/oneplus3/event'}

I have thousands of these messages an I don’t understand what could be. I have tried to rename the owntrack zone, removing or adding the “-” before the zone name, it always logs this message when my device is at home.