How cb mange WatchesDlg, when its floating window was opened and closed?

[kipade]

I found if I set debugger watches dlg floating, every time I started a new debugging session, the WatchesDlg would be reopened with a random position, I will have to move the window before anything else.
I think the window should be shown at the position before last closed.
But I don't know where is the close process code. Any hint? Thanks.