I think you are right that it's a bug or at the very least a design flaw. Problem is I need and use both -variable and -command (-variable to store the data and -command to trigger an action when the data changes).

In reply to Re^2: Tk::Scale, how to avoid callback when displayed? (its a bug) by perltux
in thread Tk::Scale, how to avoid callback when displayed? by perltux

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