[SL360 bug] Initial state: Visited makes objects unresponsive.
As in the title - when initial state is set to visited the object becomes unresponsive (you cannot click or its state doesn't change to hover), like it would be in fact in a disabled state.
Workaroung until that's fixed: Set state to visited using trigger, probably when the timeline of something starts.
Special case (not included in attached story file): When you hover over such a inital visited button (and state doesn't change to hover of course), then hovering on another object doesn't work for once. You must 'prehover' it, move cursor away, and then another hover works. I can't find a possible cause - my button is in fact .png, so maybe there's problem.