Conflict between two events if Filtermode = False and any cells changed by Fill handle. Error raised (Method 'Undo' of object 'Application' failed)? - excel

Question

I have two codes depend on application events to run.
Code (1) change color of column_A If FilterMode is True on any column of ActiveSheet.
Code (2) Log changes of any cells in ActiveSheet and put in another sheet("Log").
Error raised if : Filtermode = False and any cells changed by fill handle (the small square in the lower-right corner of the selected cell) ,
I got this error
Method 'Undo' of object '_Application' failed
on this line Application.Undo on Code (2).
I tried to use to disable and enable events with code (1) with no luck.
any help will be appreciated.
Option Compare Text
Private Sub worksheet_SelectionChange(ByVal Target As Excel.Range)
'Code (1) change color of column_A If FilterMode is True on any column of active sheet.
Dim Column_A As Range
Set Column_A = ActiveSheet.Range("A3", ActiveSheet.Range("A" & ActiveSheet.Rows.count).End(xlUp))
If ActiveSheet.FilterMode = True Then
Column_A.Interior.Color = RGB(196, 240, 255)
Else 'FilterMode = False
Column_A.Interior.Color = RGB(255, 255, 255)
End If
End Sub
' Code (2) Log Changes of Current Sheet and put in Sheet("Log")
Private Sub Worksheet_Change(ByVal Target As Range)
Dim RangeValues As Variant, r As Long, boolOne As Boolean, TgValue
Dim sh As Worksheet: Set sh = Sheets("Log")
Dim UN As String: UN = Environ$("username")
If Not Intersect(Target, Range("AK:XFD")) Is Nothing Then Exit Sub 'not doing anything if a cell in "AK:XFD" is changed
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
If Target.Cells.count > 1 Then
TgValue = extractData(Target)
Else
TgValue = Array(Array(Target.value, Target.Address(0, 0))) 'put the target range in an array (or as a string for a single cell)
boolOne = True
End If
Application.EnableEvents = False 'Avoide trigger the change event after UnDo
Application.Undo
RangeValues = extractData(Target) 'Define RangeValue
putDataBack TgValue, ActiveSheet 'Reinsert changed data
If boolOne Then Target.Offset(1).Select
Application.EnableEvents = True
Dim columnHeader As String, rowHeader As String
For r = 0 To UBound(RangeValues)
If RangeValues(r)(0) <> TgValue(r)(0) Then
columnHeader = Cells(1, Range(RangeValues(r)(1)).Column).value
rowHeader = Range("B" & Range(RangeValues(r)(1)).Row).value
Sheets("Log").Range("A" & Rows.count).End(xlUp).Offset(1, 0).Resize(1, 6).value = _
Array(UN, Now, rowHeader, columnHeader, TgValue(r)(0), RangeValues(r)(0))
'Array("User Name", "Date,Time", "Work Order", "Column Label", "New Value", "Old Value")
Range(RangeValues(r)(1)).EntireRow.AutoFit
If Range(RangeValues(r)(1)).RowHeight < 53 Then
Range(RangeValues(r)(1)).RowHeight = 53
End If
End If
Next r
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub
Sub putDataBack(arr, sh As Worksheet)
Dim i As Long, arrInt, El
For Each El In arr
sh.Range(El(1)).value = El(0)
Next
End Sub
Function extractData(rng As Range) As Variant
Dim a As Range, arr, count As Long, i As Long
ReDim arr(rng.Cells.count - 1)
For Each a In rng.Areas 'creating a jagged array containing the values and the cells address
For i = 1 To a.Cells.count
arr(count) = Array(a.Cells(i).value, a.Cells(i).Address(0, 0)): count = count + 1
Next
Next
extractData = arr
End Function

Answer 1

I figured out the issue, although the error rising with code (2) Worksheet_Change event ,
But actually SelectionChange event on code(1) is the real problem.
Apparently, when I drag down, it is sort of like selecting cells individually and all of them at the same time.
To solve this issue, a condition must be added to event SelectionChange to count the target cells:
If Target.Cells.CountLarge = 1 then
So I just modified the code to look like this in the SelectionChange part and it now works perfectly.
'Code (1)
Private Sub worksheet_SelectionChange(ByVal Target As Excel.Range)
If Target.Cells.CountLarge = 1 Then
Dim Column_A As Range
Set Column_A = ActiveSheet.Range("A3", ActiveSheet.Range("A" & ActiveSheet.Rows.count).End(xlUp))
If ActiveSheet.FilterMode = True Then
Column_A.Interior.Color = RGB(255, 0, 0)
Else 'FilterMode = False
Column_A.Interior.Color = RGB(255, 255, 255)
End If
End If
End Sub
In the meantime, I learned that Calculate event would be best choice to trapping a change to a filtered list as described on this link
https://www.experts-exchange.com/articles/2773/Trapping-a-change-to-a-filtered-list-with-VBA.html