UI::set_toolbar_visible on mac - bugged?

[thomthom]

UI::toolbar_names returns two strings on Mac. I can use those strings to show two toolbars. But I can't hide them again. Bug or some weird Mac thing I'm not understanding.

> UI;;toolbar_names
["GoogleToolPaletteController", "ToolPaletteController"]
> UI;;set_toolbar_visible("GoogleToolPaletteController", true)
true
> UI;;set_toolbar_visible("ToolPaletteController", true)
true
> UI;;set_toolbar_visible("ToolPaletteController", false)
true
> UI;;set_toolbar_visible("GoogleToolPaletteController", false)
true

The return value of UI::set_toolbar_visible is suppose to be the newly set visibility. Notice that on Mac it always return true.