macOS Big Sur beta 3 makes disappear the fullHeight sidebar when replacing an NSSplitViewItem

Question

knshi OP

Created Jul ’20

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In macOS Big Sur beta 3 and Xcode 12 beta 3, when I execute this:

Code Block if let splitController = appWindow.contentViewController as? NSSplitViewController {
	 splitController.splitViewItems[0] = NSSplitViewItem(sidebar: MY_VIEW_CONTROLLER_SIDEBAR)
	 splitController.splitViewItems[1] = NSSplitViewItem(viewController: MY_VIEW_CONTROLLER_CONTENT)
}

The sidebar loses the fullHeight layout and the toolbar starts using the full width window instead of the splitViewItem[1] width, as occurs inn beta 1 and 2 of macOS Big Sur.

This code also was killing the titlebar separator shadow in previous versions, so I'm asking if I'm setting correctly the NSSplitViewItem.

You can check sample project here:
https://github.com/albbadia/SplitController-Behavior

Answered by knshi in 626000022

Solved with beta 4.

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Answer 1

knshi OP

Aug ’20

Accepted Answer

Solved with beta 4.

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