Related weirdness--if you leave the tab running in the background and then return to it, all the icons drift from their position when the tab was backgrounded t

Related weirdness--if you leave the tab running in the background and then return to it, all the icons drift from their position when the tab was backgrounded to their latest locations. Kind of reminds me of turning on the light in the kitchen and seeing cockroaches running for cover. It can take 10-30 seconds for the map to catch up, and in the meantime the map is not very useful. Maybe test for how out-of-date the map is and do a 'hard refresh' of position.