If I move a WinForms form using VB.NET code... its height also changes. But why oh why?

Question

In the VB.NET VS2005 IDE I size this form's height to 180.

When I run this code it displays A150 B150 C180. (Not sure where the 150 comes from... or why it changes later.)

The form is still correctly displayed as 180 tall.

If I move the form's left or top position... this will change to A150 B150 C150 The form is incorrectly displayed as 150 tall

Debug.Print("A " & frmMy.Height)
frmMy.Left = 11   ' Changes to LEFT or TOP decreases the form's height by 30???
'frmMy.Top = 2
Debug.Print("B " & frmMy.Height)
Call frmMy.ShowDialog()
Debug.Print("C " & frmMy.Height)

Do I have something set in the VS2005 IDE that says "if you reposition this form... change its height too???

Answer 1

I was able to replicate similar behavior by setting AutoSize to True and AutoSizeMode to GrowAndShrink. Check if these settings were turned on inadvertently.