[mondinga]

This the Leandred that played on the Nameless in EverQuest by chance?~

Afraid I can't offer much insight here, my backdrops always behave. All mine look about like this:

<Backdrop name="Gypsy_HotBarBackdrop" bgFile="Interface\Tooltips\UI-Tooltip-Background" edgeFile="Interface\Tooltips\UI-Tooltip-Border" tile="true">
 <EdgeSize>
  <AbsValue val="16" /> 
 </EdgeSize>
 <TileSize>
  <AbsValue val="16" /> 
 </TileSize>
 <BackgroundInsets>
  <AbsInset left="5" right="5" top="5" bottom="5" /> 
 </BackgroundInsets>
</Backdrop>