On my iOS project I use GoogleMaps framework and Google-Maps-iOS-Utils framework in order to use clustering markers on map.
Without using clustering, just Google Maps, when I create severals markers, setting title's property, a tap on it show an info window with the corresponding title.
But when I use clustering, a tap on a marker (cluster or an item, the result is the same) the info window does not appear although the properties title and snippet are filled, why ?