This situation can happen when GPS signal accuracy is low and device tries to use the wifi network location for the positioning. Mainly on Android. See more in GPS reception on what signals are used for positioning.

Wifi based positioning is not accurate enough for Loquiz, so to avoid that, it is ok to disable in the device settings. Wifi location might be beneficial for other applications so do it with care. Go to Settings->Location->Mode and switch the Mode to Device only. This will only use GPS for positioning and not other signals.