This trigger is problematic:
All the built-in states have built-in triggers that give them their superpowers. Creating your own triggers to duplicate those superpowers is akin to tugging on Superman's cape - not likely to end well for you. Clicking on an object with a Visited state automatically changes its state to Visited.
Try to do it any other way, and you really don't know what might happen. It is much safer to use a custom state with a different name.
Also, groups are known not to play nicely with any other element in SL, but especially not with states and triggers. You would be better off giving your ovals outlines using the built-in Outline and Width functions that are found in the Drawing tab when you select an object.
