"doc.adjustLayoutPreferences.enableAutoAdjustMargins = true" does not work

I try to adjust document. Before it I set adjustLayoutPreferences:

doc.adjustLayoutPreferences.enableAdjustLayout = true;
doc.adjustLayoutPreferences.enableAutoAdjustMargins = true;
doc.adjustLayoutPreferences.allowFontSizeAndLeadingAdjustment = true;
doc.adjustLayoutPreferences.allowLockedObjectsToAdjust = true;

doc.adjustLayout({width: "1200px"});

After this I got new page size and new font sizes, BUT old margins.

Is it an error in InDesign?