Gridview: scrollToTop doesn't work

The gridview:scrollToTop function doesn't appear to work. Here's the function:

function playdate.ui.gridview:scrollToTop(animated)
	if animated == nil then animated = true end
	self:setScrollPosition(0, self.scrollPositionY, animated)
end

The name of the function suggests this should scroll a vertical list to the top. Unless I'm mistaken, self.scrollPositionY is the current scroll position which makes this call a no-op for vertical lists. Perhaps the intent was to preserve the current x position instead, while animating to 0 for y?