Topic: Map zoom gesture mid point subjected to IsCursorOnUIElement check
Using version 188.8.131.52
Zoom gesture is performing a IsCursorOnUIElement check on the mid point of the two touch events, this has the effect that if you are zooming the map and GUI elements are in the middle of your input touches, the zoom gesture cannot start.
The check is approximately line 1008 in the script OnlineMapsControlBase.cs.
In previous versions this check is not performed, we have observed that this behaviour prevents a user from zooming in on a Gui element on the map, as it generally sits in the center of their zoom gesture.