Portal disappears gradually from main map view when zooming in.
Pic 1: Max zoom out, 3 neutral portals are show correctly.
Pic 2: About 50 % zoom in, top right neutral portal is barely visible.
Pic 3: Max zoom in, portal disappears from the map view.
Zooming to max out and zooming in again -> portal reappears and disappears again.
After Ingress restart the portal was shown correctly.
Samsung S8 Android 9 2.66.1