Black map and 'mapReady' not fired

[flocca]

On Android, the map is randomly not displayed and it's completely black (except for the MapBox logo if hideLogo: false). The mapReady event is not fired.

Pausing and resuming the app is the only way to revive the map and firing the mapReady event.

The map is inside a tab.

"tns-android": {
  "version": "6.5.3"
},
...
"nativescript-mapbox": "^5.0.1",
"tns-core-modules": "6.5.15",