WoWInterface - View Single Post - Addons Now Usable in Shadowlands Beta
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07-17-20, 07:40 PM   #5
nUI Maintainer
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Join Date: Feb 2006
Posts: 5,550
uhoh .. I think I will be busier than normal .. no wonder they started addon access early rofl

One of the major changes in 9.0 is a change to SetBackdrop. The TL/DR, on live, 100% of frames support backdrops, whether they are used or not. 1000s of frames between every addon and default UI, even frames that never see such as event frames have backdrops. UI team realized this is a serious performance issue. so effective in 9.0, no frames have backdrops unless the addon imports/inherits the backdrop template.
this means addons that aren’t importing them now throw nil errors with method “Setbackdrop”. This issue affects a large number of addons.
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