WowAce

Hi,
when I have SUF enabled any attempt to move UI (tested mostly on skyriding panel) throws lua error and resets any changes in UI.
Error:

11x ...izzard_EditMode/Mainline/EditModeSystemTemplates.lua:535: attempt to perform arithmetic on local 'left' (a nil value)
[string "@Blizzard_EditMode/Mainline/EditModeSystemTemplates.lua"]:535: in function `GetScaledSelectionSides'
[string "@Blizzard_EditMode/Mainline/EditModeSystemTemplates.lua"]:507: in function `IsVerticallyAlignedWithFrame'
[string "@Blizzard_EditMode/Mainline/EditModeSystemTemplates.lua"]:725: in function `GetFrameMagneticEligibility'
[string "@Blizzard_EditMode/Mainline/EditModeUtil.lua"]:152: in function `GetEligibleMagneticFrames'
[string "@Blizzard_EditMode/Mainline/EditModeUtil.lua"]:341: in function `GetMagneticFrameInfoOptions'
[string "@Blizzard_EditMode/Mainline/EditModeUtil.lua"]:424: in function `GetMagneticFrameInfos'
[string "@Blizzard_EditMode/Mainline/EditModeManager.lua"]:961: in function `RefreshSnapPreviewLines'
[string "@Blizzard_EditMode/Mainline/EditModeManager.lua"]:72: in function <...ddOns/Blizzard_EditMode/Mainline/EditModeManager.lua:70>

Locals:
self = BossTargetFrameContainer {
systemInfo = <table> {
}
downKeys = <table> {
}
breakSnappedFramesOnSave = true
smallSize = false
spacing = 10
alwaysUseTopRightAnchor = true
isManagedFrame = true
hasActiveChanges = false
dirty = false
isHighlighted = true
systemIndex = 6
isInEditMode = true
snappedFrames = <table> {
}
ignoreFramePositionManager = true
isRightManagedFrame = true
layoutParent = UIParentRightManagedFrameContainer {
}
savedSystemInfo = <table> {
}
systemNameString = "Boss Frames"
BossTargetFrames = <table> {
}
isSelected = false
castBarOnSide = true
dirtySettings = <table> {
}
hideWhenActionBarIsOverriden = false
settingMap = <table> {
}
settingDisplayInfoMap = <table> {
}
Selection = Frame {
}
settingsDialogAnchor = <table> {
}
align = "right"
respectChildScale = true
layoutIndex = 4
defaultHideSelection = true
system = 3
rightPadding = -70
}
left = nil
bottom = nil
width = nil
height = nil
scale = 1.100000
(*temporary) = BossTargetFrameContainer {
systemInfo = <table> {
}
downKeys = <table> {
}
breakSnappedFramesOnSave = true
smallSize = false
spacing = 10
alwaysUseTopRightAnchor = true
isManagedFrame = true
hasActiveChanges = false
dirty = false
isHighlighted = true
systemIndex = 6
isInEditMode = true
snappedFrames = <table> {
}
ignoreFramePositionManager = true
isRightManagedFrame = true
layoutParent = UIParentRightManagedFrameContainer {
}
savedSystemInfo = <table> {
}
systemNameString = "Boss Frames"
BossTargetFrames = <table> {
}
isSelected = false
castBarOnSide = true
dirtySettings = <table> {
}
hideWhenActionBarIsOverriden = false
settingMap = <table> {
}
settingDisplayInfoMap = <table> {
}
Selection = Frame {
}
settingsDialogAnchor = <table> {
}
align = "right"
respectChildScale = true
layoutIndex = 4
defaultHideSelection = true
system = 3
rightPadding = -70
}
(*temporary) = 1.100000
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to perform arithmetic on local 'left' (a nil value)"

I'm encountering the same issue. To use WoW Edit Mode, I must first disable the SUF addon, other wise I get the error and I can't save the changes I made with the Edit Mode for the UI.

Same as above. I cant edit and save the ui without first disabling SUF. 

I also have this problem, but I found in a GitHub issue that helped me narrow it down. It only happens for me when (1) I have the "Snap to Elements" checkbox enabled in the edit mode, and (2) "Hide boss frames" is selected in the "Hide Blizzard" section of the Shadowed Unit Frames config. I wasn't able to reproduce this with any other combination of elements hidden; I still get the error if "Hide boss frames" is the only checkbox selected, and it also works fine if everything else except that is selected.

That GitHub issue was a pull request that had a fix, but I have issues with that patch applied; the core issue seems to be fine for me, where I can now save changes in edit mode without changing addons, but the hiding Blizzard components seems to break when I change zones or enter/leave a vehicle.

I can confirm that disabling "Snap to Elements" is a workaround that allows you to move the Blizz elements again. In my case I wanted to move the actions bars. Of course, a real solution would be much appreciated. I am evaluating SuF to replace my ElvUI configuration and I am loving that SuF is using WAY less resources. Great job!