Hi there,
I have been struggling for quite a while about implementing a -seemingly- straightforward popup for my interface. Basically, the popup should appear upon clicking a button and cover everything behind it. I have tweaked too much with Z values and Depth of my components with no success; on the contrary I find their functionality totally unpredictable

. All my elements belong to the Fantasy Atlas, so there shouldn't be a problem there (referring to this thread:
http://www.tasharen.com/forum/index.php?topic=767.msg3947#msg3947)
I include 3 screenshot to make things clearer than explaining everything. Notes: you can see the Z and Depth values for the pop-up window 'InputWindow' (green) and 'Label1' (red) for every instance. The whole background appears on the far left; I have no idea why the popup window is so far to the right. Additionally, the slightest change in its Z value (<1) causes it to move much more than other objects (as is visible between images 2 and 3 for a -0.25 change). Z values for their parent objects (empty object containers) are 0 for both cases (label and window).
Does anyone have any idea what might be the issue here? Under no circumstances can I move the list items behind the brown window!

Thank you for your comments/advice.