Hello, I am facing the same issue. I follow Andrea's instructions but the wms layer and the google v3 layer don't zoom together.
It seems a problem with the map transformation, where the wms layer is transformed and the google layer not. I fixed this problem in 2.12 version overriding the pinchZoomControl.applyTransform method, but in 2.13 this method is inside the Map class... In web browsers, we can see the transformation been applying just for the overlay during a ZoomIn or ZoomOut, but that's ok because the effect is quick. The problem becomes critical when we use a smartphone or a tablet, because when we perform a PinchZoom, only the overlay is transformed. It's hard to explain in words, even in images because the problem occurs during the animation process, but I expect you can figure it out throught these screenshots: Before start the pinch zoom: <http://osgeo-org.1560.x6.nabble.com/file/n5070019/pinchZoom1.jpg> During the pinch zoom: <http://osgeo-org.1560.x6.nabble.com/file/n5070019/pinchZoom2.jpg> Thanks -- View this message in context: http://osgeo-org.1560.x6.nabble.com/HELP-OL-2-13-Google-v3-and-other-layers-not-zooming-together-tp5060658p5070019.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list us...@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/openlayers-users