GW2UI moving chat

Message: Interface\FrameXML\FloatingChatFrame.lua:1226: attempt to perform arithmetic on a nil value
Time: Mon Nov 11 19:35:11 2019
Count: 573
Stack: Interface\FrameXML\FloatingChatFrame.lua:1226: attempt to perform arithmetic on a nil value
Interface\FrameXML\FloatingChatFrame.lua:1226: in function `FCF_SavePositionAndDimensions'
Interface\FrameXML\FloatingChatFrame.lua:1291: in function `FCF_StopDragging'
Interface\FrameXML\FloatingChatFrame.lua:1323: in function `FCFTab_OnDragStop'
Interface\FrameXML\FloatingChatFrame.lua:1314: in function <Interface\FrameXML\FloatingChatFrame.lua:1296>

Locals: chatFrame = ChatFrame1 {
 GatherSelectedText = <function> defined =[C]:-1
 RefreshIfNecessary = <function> defined =[C]:-1
 OnPostShow = <function> defined =[C]:-1
 CalculateLineAlphaValueFromTimestamp = <function> defined =[C]:-1
 ScrollUp = <function> defined =[C]:-1
 tellTimer = 6985.161000
 fadeDurationSecs = 3
 GetFading = <function> defined =[C]:-1
 IsTextCopyable = <function> defined =[C]:-1
 shouldFadeAfterInactivity = true
 SetIndentedWordWrap = <function> defined =[C]:-1
 GetJustifyV = <function> defined =[C]:-1
 ScrollToBottom = <function> defined =[C]:-1
 GetMaxLines = <function> defined =[C]:-1
 GetIndentedWordWrap = <function> defined =[C]:-1
 buttonSide = "right"
 GetFont = <function> defined =[C]:-1
 checkedGMOTD = true
 SetMaxLines = <function> defined =[C]:-1
 CalculateSelectingCharacterIndicesForVisibleLine = <function> defined =[C]:-1
 OnPostUpdate = <function> defined =[C]:-1
 RefreshDisplay = <function> defined =[C]:-1
 SetFontObject = <function> defined =[C]:-1
 textIsCopyable = false
 SetOnScrollChangedCallback = <function> defined =[C]:-1
 CalculateNumVisibleLines = <function> defined =[C]:-1
 overrideFadeTimestamp = 7271.197000
 MarkDisplayDirty = <function> defined =[C]:-1
 GetMessageInfo = <function> defined =[C]:-1
 GetOnScrollChangedCallback = <function> defined =[C]:-1
 AtTop = <function> defined =[C]:-1
 GetFontObject = <function> defined =[C]:-1
 fontStringPool = <table> {
 }
 CanEffectivelyFade = <function> defined =[C]:-1
 OnPreSizeChanged = <function> defined =[C]:-1
 GetScrollOffset = <function> defined =[C]:-1
 GetSpacing = <function> defined =[C]:-1
 OnPreLoad = <function> defined =[C]:-1
 SetSpacing = <function> defined =[C]:-1
 name = "General"
 CalculateLineSpacing = <function> defined =[C]:-1
 AddMessage = <function> defined =[C]:-1
 InitializeFontableFrame = <function> defined =[C]:-1
 GetShadowColor = <function> defined =[C]:-1
 isUninteractable = false
 SetOnTextCopiedCallback = <function> defined =[C]:-1
 mouseOutTime = 0
 RemoveMessagesByPredicate = <function> defined =[C]:-1
 TransformMessages = <function> defined =[C]:-1
 SetShadowColor = <function> defined =[C]:-1
 buttonFrame = ChatFrame1ButtonFrame {
 }
 HasFontObject = <function> defined =[C]:-1
 isDocked = 1
 GetOnTextCopiedCallback = <function> defined =[C]:-1
 SetFading = <function> defined =[C]:-1
 OnPostHide = <function> defined =[C]:-1
 alternativeDefaultLanguage = "Orcish"
 isInitialized = 1
 GetNumVisibleLines = <function> defined =[C]:-1
 GetInsertMode = <function> defined =[C]:-1
 SetTimeVisible = <function> defined =[C]:-1
 hasOwnFontObject = true
 Clear = <function> defined =[C]:-1
 oldAlpha = 0.156863
 channelList = <table> {
 }
 GetTimeVisible = <function> defined =[C]:-1
 IsSelectingText = <function> defined =[C]:-1
 SetTextCopyable = <function> defined =[C]:-1
 BackFillMessage = <function> defined =[C]:-1
 UnpackageEntry = <function> defined =[C]:-1
 FontStringContainer = <unnamed> {
 }
 SetShadowOffset = <function> defined =[C]:-1
 messageTypeList = <table> {
 }
 timeVisibleSecs = 120
 PackageEntry = <function> defined =[C]:-1
 MakeFontObjectCustom = <function> defined =[C]:-1
 fontObject = table: 0000019C8B4F9970 {
 }
 SetInsertMode = <function> defined =[C]:-1
 mouseInTime = 0
 UpdateSelectingText = <function> defined =[C]:-1
 zoneChannelList = <table> {
 }
 SetScrollOffset = <function> defined =[C]:-1
 onDispl