There is an existing thread here
that talks about Timeline items overlapping when zoomed out.
In my scenario, I am using icons/images to represent items on the timeline and even at the most zoomed-in level, there is some overlap. It seems like items are layered based on the StartTime of the items, but is there a way to get the ZIndex set in the ItemTemplate to take priority for ordering?
I would like certain types of data to always show at the top, but this doesn't currently work even if the ZIndex is set higher than an item that starts immediately after it.