Generate Panels based on dynamic location - vb.net

Question

I have a big panel and a function which generates panels which hold two labels. Each panel is generated under the previous one, in a message-based system.
The function looks like this:
Function GenerateMessage(ByVal author As String, ByVal message As String)
Dim user_name As String = author
Dim user_id As String = message
Dim Lbl As New Panel
AddHandler Lbl.DoubleClick, AddressOf DoubleC
AddHandler Lbl.MouseDown, AddressOf MouseDownme
AddHandler Lbl.MouseEnter, AddressOf Hoverme
AddHandler Lbl.MouseLeave, AddressOf Leaveme
Lbl.Name = "messagePanel"
If lastSavedControl Is Nothing Then
Lbl.Location = New Point(My.Settings.LastMessageX, My.Settings.LastMessageY + 70)
Else
Lbl.Location = New Point(lastSavedControl.Location.X, lastSavedControl.Location.Y + 70)
End If
Lbl.Size = New System.Drawing.Size(containerReceived.Width, containerReceived.Height)
Lbl.Font = New Font("Leelawadee UI", 10, FontStyle.Regular)
Lbl.BorderStyle = BorderStyle.None
Lbl.Cursor = Cursors.Hand
Lbl.Visible = True
Lbl.BackColor = Color.Transparent
Lbl.ForeColor = Color.Silver
Lbl.Anchor = AnchorStyles.Left + AnchorStyles.Top
chatPanel.Controls.Add(Lbl)
Debug.WriteLine(Lbl.Location.X)
Debug.WriteLine(Lbl.Location.Y)
My.Settings.LastMessageX = Lbl.Location.X
My.Settings.LastMessageY = Lbl.Location.Y
Dim newAuthor As New Label
AddHandler newAuthor.DoubleClick, AddressOf LabelDoubleC
AddHandler newAuthor.MouseDown, AddressOf LabelMouseDown
AddHandler newAuthor.MouseEnter, AddressOf LabelHover
AddHandler newAuthor.MouseLeave, AddressOf LabelMouseLeave
newAuthor.Name = "authorLbl"
newAuthor.AutoSize = True
newAuthor.Location = New Point(messageReceived.Location.X, 6) ' 9, 5
newAuthor.Font = New Font("Leelawadee UI", 12, FontStyle.Regular)
newAuthor.Cursor = Cursors.Hand
newAuthor.Anchor = AnchorStyles.Top + AnchorStyles.Left
newAuthor.Visible = True
newAuthor.Text = $"#{user_name}"
newAuthor.Tag = "userLbl"
newAuthor.BackColor = Color.Transparent
newAuthor.ForeColor = Color.Black
Lbl.Controls.Add(newAuthor)
newAuthor.Parent = Lbl
Dim newMessage As New Label
AddHandler newMessage.DoubleClick, AddressOf LabelDoubleC
AddHandler newMessage.MouseDown, AddressOf LabelMouseDown
AddHandler newMessage.MouseEnter, AddressOf LabelHover
AddHandler newMessage.MouseLeave, AddressOf LabelMouseLeave
newMessage.Name = "messageLbl"
newMessage.Location = New Point(messageReceived.Location.X, 35) ' 9, 5
For Each lineofText In chatBox.Lines
newMessage.Size = New Point(messageReceived.Width, 12 * lineofText)
Next
newMessage.Font = New Font("Leelawadee UI", 9, FontStyle.Regular)
newMessage.Cursor = Cursors.Hand
newAuthor.Anchor = AnchorStyles.Top + AnchorStyles.Left
newMessage.Visible = True
newMessage.Text = user_id
newMessage.Tag = "idLbl"
newMessage.BackColor = Color.Transparent
newMessage.ForeColor = Color.Black
Lbl.Controls.Add(newMessage)
newMessage.Parent = Lbl
End Function
My.Settings.LastMessageX and My.Settings.LastMessageY are two integers defined which are saved on each panel generation. lastSavedControl is also a variable, defined at run-time, which holds the entire control. But using the Y location from lastSavedControl doesn't seem to make a difference.
I also have AutoScroll enabled on the big panel to help with scrolling when there are too many messages to fit.
When the scrollbar is enabled and scrolled all the way down, the Y (height) property on the generated panel seems to skip. It doubles every time I generate a new panel. I suspect it's because the Y value of the big panel changes when the scrollbar is used. I don't know how to get around this.
Example image of panels skipping
I have unsuccessfully tried to save the location of the previously generated panel, and the bug seems to bypass that, likely because of the Y value of the big panel changing when scrolling.