Userform stops other sheets from scrolling - vba

Question

I have a few userforms. One is a popup that shows instructions and another is for entering quantities. Problem is when I click one and close it (each closes with Unload Me) then when I switch sheets with a sht.Activate macro button that sheet won't scroll. Looks like the sheet is frozen. I can fix the problem by loading the userform and closing it again on the current sheet to "Unfreeze" the sheet.
Any idea why this is happening?
UserForm
Private Sub UserForm_Click()
Unload Me
End Sub
Below is how I call it from a button.
Sub Instructions()
With UserFormInstructions
.StartUpPosition = 0
.Left = Application.Left + (0.5 * Application.Width) - (0.5 * .Width)
.Top = Application.Top + (0.5 * Application.Height) - (0.5 * .Height)
.Show
End With
End Sub
Sheet Button
Sub goto630()
Application.ScreenUpdating = False
Dim sht2 As Worksheet
Set sht2 = ThisWorkbook.Worksheets("Foundation Plates")
Dim sht3 As Worksheet
Set sht3 = ThisWorkbook.Worksheets("630 BOM")
sht3.Activate
sht3.Unprotect
sht2.Visible = True
sht3.Visible = True
On Error GoTo 0
ActiveWindow.Zoom = 90
ActiveWindow.DisplayHeadings = True
ActiveWindow.DisplayHorizontalScrollBar = True
ActiveWindow.DisplayVerticalScrollBar = True
Application.DisplayFormulaBar = True
sht3.DisplayPageBreaks = False
sht2.Protect
sht3.Protect _
DrawingObjects:=False, _
Contents:=True, _
Scenarios:=False, _
UserInterFaceOnly:=False, _
AllowFormattingCells:=True
Call NoSelect
Set sht3 = Nothing
Application.ScreenUpdating = True
End Sub
Sub NoSelect()
Application.ScreenUpdating = False
Range("D1").Select
ActiveWindow.SmallScroll ToLeft:=4
Application.ScreenUpdating = True
End Sub
Thanks