Unable to change transparency on TileOverlay on Android

I'm migrating from the kefahB/nativescript-google-maps plugin to @nativescript/google-maps.
My app animates weather radar by composing an array of TileOverlays and then iteratively changing the TileOverlay's transparency to hide one overlay and display the next.

While transparency can be specified in the TileOverlayOptions when creating a TileOverlay, it can't be modified directly afterwards. Instead, you have to use native methods, such as on iOS:

tileOverlay.native.opacity = 1.0;  // display tileOverlay

On Android, there's:

tileOverlay.native.setTransparency(0.0);  // display tileOverlay

But this seems to have no effect. I can see in the debugger and via tileOverlay.native.getTransparency() that the native TileOverlay's transparency property has indeed been changed, but there is no change in the display.

Commencez par l’implémentation Android de TileOverlay exposée via tileOverlay.native et suivez setTransparency ainsi que transparency dans TileOverlayOptions. Reproduisez la mise à jour de la superposition radar sur Android et vérifiez que la modification de transparency après la création modifie la superposition rendue.