Recently upgraded to viewer 3.3 and a very funny situation develops in the layer control. I have seven layer groups, each containing 4 layers each with visibility of layers controlled by scale. In the first group I can use the zoom in /out tool or mouse scroll to zoom in and out and the map performs as expected. Turn off layer group 1 and and turn on layer group 2 and repeat the same process (zoom in / out or mouse scroll), all layers become unselected. This is same for all layer groups except the first group. I have tested the same map in Viewer 3.2 and it works fine. Has anyone observed this or just my own ?