Workbook_Open doesn't run on second open

[carsto]

I have noticed this on more than one workbook with an Workbook_Open macro.

When you open Excel, open Workbook1, do some work , save or don't save and close, then reOpen Workbook1 without having closed the Excel application, the Workbook_Open macro in Workbook1 doesn't run.

Closing Excel and reopening Workbook1 initiates the Workbook_Open macro. It's as if Excel remembers having previously opened Workbook1 and so it doesn't rerun the Workbook_Open macro the next time you open it.

Is this a bug or can I program around it?
EXCEL 2000