Shouldnt €˜UserInterfaceOnly:=True allow macros to change the sheet?

My worksheet has a Shape which moves to align with Column V when a macro is
run. It works while the sheet is unprotected but when its protected, the
macro fails (Run-time error 1004) even though protection was set for User
Interface Only.

The 'Protect' macro uses this code:
Sheets("Name").Protect Password:="password", UserInterfaceOnly:=True,
Contents:=True, DrawingObjects:=True

The 'Move' macro which aligns the drawing object selects it and uses this
code:
Selection.Left = .Columns("V").Left

I know I could add code at the beginning and end of €˜Move to Unprotect and
Protect the sheet, but I thought that with €˜UserInterfaceOnly:=True, I
should not need to do this?
--
Kasama