Hello Danny,
You need to use a single approach when setting the AutoPostBack properties of the dock's commands (i.e. use either the dock.CommandsAutoPostBack, or the AutoPostBack property for every individual command). For example in the project attached to the thread I am setting AutoPostBack=false to the ExpandCollapse/Command and AutoPostBack=true to the Close command.
Greetings,
Pero
the Telerik team