.NET (4.5) ListView - add/remove column bug(?) - vb.net

Question

I came across an awkward (that is, unexpected for me) behaviour of the .NET Listview. The issue may have been posted before. If so, apologies for the duplication: I didn't find it and would appreciate being pointed to "the" discussion.
Context: I'm using VisualStudio 2013, VB, target framework 4.5
Build a Form with a listview and a few buttons.
The ListView (Details-view) is initially configured with 1 column labeled "1" and 2 rows, each containing a "1".
Then there's a button to Add a column with header "A" (if it's not there yet) and for each listviewItem a subitem "a". Likewise for a column "B" with subitem "b".
Finally there are buttons to remove columns "A" and "B" respectively.
Now, if I do the following:
Add "A"
Delete "A"
Add "B"
I wind up with a column "B" (header) with column contents "a", i.e. those of the "removed" column "A".
Playing around you always find that upon removal of a column (listview.columns.removeBykey('key'), for instance) the subitems seem to persist "invisibly" and come to life if "any" columnHeader is added later on.
I'm not looking for help to solve a programming problem: there's an easy way around (whenever you remove a column, also remove explicitly the corresponding subitems from each listviewItem), but it puzzles me that this clumsy (in my view) approach would be necessary.
Maybe I don't properly use/configure the listview and should have known all this. Any comment is appreciated.
I copy the code below, to make it easier to verify for anyone interested.
(Designer code)
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
Inherits System.Windows.Forms.Form
'Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
Try
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
End If
Finally
MyBase.Dispose(disposing)
End Try
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.lvStd = New System.Windows.Forms.ListView()
Me.btnAdd_A = New System.Windows.Forms.Button()
Me.btnDel_A = New System.Windows.Forms.Button()
Me.btnAdd_B = New System.Windows.Forms.Button()
Me.btnDel_B = New System.Windows.Forms.Button()
Me.SuspendLayout()
'
'lvStd
'
Me.lvStd.Dock = System.Windows.Forms.DockStyle.Top
Me.lvStd.Location = New System.Drawing.Point(0, 0)
Me.lvStd.Name = "lvStd"
Me.lvStd.Size = New System.Drawing.Size(661, 207)
Me.lvStd.TabIndex = 0
Me.lvStd.UseCompatibleStateImageBehavior = False
Me.lvStd.View = System.Windows.Forms.View.Details
'
'btnAdd_A
'
Me.btnAdd_A.Location = New System.Drawing.Point(12, 235)
Me.btnAdd_A.Name = "btnAdd_A"
Me.btnAdd_A.Size = New System.Drawing.Size(75, 23)
Me.btnAdd_A.TabIndex = 1
Me.btnAdd_A.Text = "Add A"
Me.btnAdd_A.UseVisualStyleBackColor = True
'
'btnDel_A
'
Me.btnDel_A.Location = New System.Drawing.Point(12, 264)
Me.btnDel_A.Name = "btnDel_A"
Me.btnDel_A.Size = New System.Drawing.Size(75, 23)
Me.btnDel_A.TabIndex = 2
Me.btnDel_A.Text = "Del A"
Me.btnDel_A.UseVisualStyleBackColor = True
'
'btnAdd_B
'
Me.btnAdd_B.Location = New System.Drawing.Point(159, 235)
Me.btnAdd_B.Name = "btnAdd_B"
Me.btnAdd_B.Size = New System.Drawing.Size(75, 23)
Me.btnAdd_B.TabIndex = 3
Me.btnAdd_B.Text = "Add B"
Me.btnAdd_B.UseVisualStyleBackColor = True
'
'btnDel_B
'
Me.btnDel_B.Location = New System.Drawing.Point(159, 264)
Me.btnDel_B.Name = "btnDel_B"
Me.btnDel_B.Size = New System.Drawing.Size(75, 23)
Me.btnDel_B.TabIndex = 4
Me.btnDel_B.Text = "Del B"
Me.btnDel_B.UseVisualStyleBackColor = True
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(661, 474)
Me.Controls.Add(Me.btnDel_B)
Me.Controls.Add(Me.btnAdd_B)
Me.Controls.Add(Me.btnDel_A)
Me.Controls.Add(Me.btnAdd_A)
Me.Controls.Add(Me.lvStd)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
Friend WithEvents lvStd As System.Windows.Forms.ListView
Friend WithEvents btnAdd_A As System.Windows.Forms.Button
Friend WithEvents btnDel_A As System.Windows.Forms.Button
Friend WithEvents btnAdd_B As System.Windows.Forms.Button
Friend WithEvents btnDel_B As System.Windows.Forms.Button
End Class
and the "Form" code:
Public Class Form1
Protected Overrides Sub OnLoad(e As EventArgs)
MyBase.OnLoad(e)
If (Me.DesignMode) Then Return
Me.Configure()
Me.FillList()
End Sub
Private Sub Configure()
Me.lvStd.BeginUpdate()
Me.lvStd.Clear()
Me.lvStd.Columns.Add("1")
Me.lvStd.EndUpdate()
End Sub
Private Sub FillList()
Dim LI As ListViewItem
For k As Integer = 1 To 2
LI = Me.lvStd.Items.Add("1")
Next
End Sub
Private Sub btnAdd_A_Click(sender As Object, e As EventArgs) Handles btnAdd_A.Click
Dim col As ColumnHeader = Me.lvStd.Columns("A")
If (col IsNot Nothing) Then
Return
End If
Me.lvStd.Columns.Add("A", "A")
For Each LI As ListViewItem In Me.lvStd.Items
LI.SubItems.Add("a")
Next
End Sub
Private Sub btnDel_A_Click(sender As Object, e As EventArgs) Handles btnDel_A.Click
Dim col As ColumnHeader = Me.lvStd.Columns("A")
If (col IsNot Nothing) Then
Me.lvStd.Columns.Remove(col)
End If
End Sub
Private Sub btnAdd_B_Click(sender As Object, e As EventArgs) Handles btnAdd_B.Click
Dim col As ColumnHeader = Me.lvStd.Columns("B")
If (col IsNot Nothing) Then
Return
End If
Me.lvStd.Columns.Add("B", "B")
For Each LI As ListViewItem In Me.lvStd.Items
LI.SubItems.Add("b")
Next
End Sub
Private Sub btnDel_B_Click(sender As Object, e As EventArgs) Handles btnDel_B.Click
Dim col As ColumnHeader = Me.lvStd.Columns("B")
If (col IsNot Nothing) Then
Me.lvStd.Columns.Remove(col)
End If
End Sub
End Class