Describe the bug
Hey. This error pops up whenever I have elvui enabled with tiptac although I have elvui's tooltips disabled (only running tiptac for it). Also the mouse anchor y offset doesn't seem to be chaning anything while having all the tooltip units and tips anchored to mouseover. The x offset for this is working fine tho. All the above didn't happen before 23.01.23 update.

507x SharedXML/Backdrop.lua:189: attempt to index field 'backdropInfo' (a nil value)
[string "@SharedXML/Backdrop.lua"]:189: in function GetEdgeSize' [string "@SharedXML/Backdrop.lua"]:218: in function SetupTextureCoordinates'
[string "@SharedXML/Backdrop.lua"]:325: in function <SharedXML/Backdrop.lua:294>
[string "=[C]"]: in function ApplyBackdrop' [string "@SharedXML/Backdrop.lua"]:341: in function <SharedXML/Backdrop.lua:329> [string "=[C]"]: in function SetBackdrop'
[string "@ElvUI/Core/General/Toolkit.lua"]:163: in function SetTemplate' [string "@ElvUI/Core/Modules/Tooltip/Tooltip.lua"]:789: in function <ElvUI/Core/Modules/Tooltip/Tooltip.lua:782> [string "=(tail call)"]: ? [string "=[C]"]: ? [string "=[C]"]: in function SharedTooltip_SetBackdropStyle'
[string "@FrameXML/GameTooltip.lua"]:449: in function <FrameXML/GameTooltip.lua:446>
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "=[C]"]: in function `Hide'
[string "@TipTac/ttCore.lua"]:2434: in function <TipTac/ttCore.lua:2398>
[string "=[C]"]: ?

Locals:
self = Frame {
BottomLeftCorner = Texture {
}
OnBackdropLoaded = defined @SharedXML/Backdrop.lua:152
GetBackdropColor = defined @SharedXML/Backdrop.lua:390
SetBackdropBorderColor = defined =[C]:-1
RightEdge = Texture {
}
template = "Transparent"
BottomEdge = Texture {
}
SetBackdrop = defined =[C]:-1
GetCenterColor = defined @SharedXML/NineSlice.lua:255
GetBackdropBorderColor = defined @SharedXML/Backdrop.lua:409
GetBackdrop = defined @SharedXML/Backdrop.lua:347
SetBorderBlendMode = defined @SharedXML/Backdrop.lua:266
SetCenterColor = defined =[C]:-1
GetFrameLayoutTextureKit = defined @SharedXML/NineSlice.lua:236
SetVertexColor = defined @SharedXML/NineSlice.lua:285
SetupTextureCoordinates = defined @SharedXML/Backdrop.lua:214
GetBorderColor = defined @SharedXML/NineSlice.lua:273
TopRightCorner = Texture {
}
Center = Texture {
}
customBackdropAlpha = 1
SetupPieceVisuals = defined @SharedXML/Backdrop.lua:246
GetEdgeSize = defined @SharedXML/Backdrop.lua:188
0 =
OnLoad = defined @SharedXML/NineSlice.lua:241
TopEdge = Texture {
}
ApplyBackdrop = defined =[C]:-1
HasBackdropInfo = defined @SharedXML/Backdrop.lua:278
OnBackdropSizeChanged = defined @SharedXML/Backdrop.lua:182
TopLeftCorner = Texture {
}
ClearBackdrop = defined =[C]:-1
GetFrameLayoutType = defined @SharedXML/NineSlice.lua:232
BottomRightCorner = Texture {
}
SetBackdropColor = defined =[C]:-1
LeftEdge = Texture {
}
SetBorderColor = defined =[C]:-1
}
(*temporary) = nil
(*temporary) = "attempt to index field 'backdropInfo' (a nil value)"
defaultEdgeSize = 39

To Reproduce
Steps to reproduce the behavior:

1. Enable tiptac and elvui.
2. Mouseover any unit.
3. See error.

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
https://imgur.com/JX1Eklq

TipTac Reborn (please complete the following information):

• Version 23.01.23

WoW (please complete the following information):

• Flavor: Retail.
• Version 10.0.2.

Additional context
Tested this with only elvui and tiptac to confirm it only happens with these addons.

Thanks for reporting this! 👍

Fixed with next release.

Hi. Thanks for the elvui's part fix. I tested changing the mouse anchor x offset and nothing happened, so I suppose this part wasn't fixed yet (described here too: #179 ). I think another issue was introduced in today's release, which makes the frame tip type anchors unchangeable (mine was always anchored to mouseover at top left as you can see in the screenshots I posted before).

Mouse offsets (under "Mouse") only are considered if mouse anchoring is involved (under "Anchors"). The bug considering mouse offset y will be included in the next release.

Yeah, sorry, I meant to mention the y offset instead of the x one, which is working fine.