Open Radar

 
On iPadOS 16 Beta 6 and Beta 7, presenting the view controller for a `UIFindInteraction` briefly displays the find interaction toolbar and then immediately dismisses. 

The following is observed in the logs:

2022-08-24 10:34:21.922668+0530 UIFindInteractionDemo[81201:659708] [TraitCollection] Class _UIFindNavigatorViewController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
2022-08-24 10:34:21.932173+0530 UIFindInteractionDemo[81201:659708] [TraitCollection] Class _UIFindNavigatorView overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
2022-08-24 10:34:22.008366+0530 UIFindInteractionDemo[81201:659708] [LayoutConstraints] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don't expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    "<NSLayoutConstraint:0x600001bba800 find.nextButton.width == UIStackView:0x7f93c8f0cea0.height   (active, names: find.nextButton:0x7f93e8f359b0 )>",
    "<NSLayoutConstraint:0x600001bbb1b0 find.previousButton.width == UIStackView:0x7f93c8f0cea0.height   (active, names: find.previousButton:0x7f93e8f334e0 )>",
    "<NSLayoutConstraint:0x600001b81a40 'UISV-canvas-connection' UIStackView:0x7f93c8f0cea0.leading == find.doneButton.leading   (active, names: find.doneButton:0x7f93c8f14920 )>",
    "<NSLayoutConstraint:0x600001b81ae0 'UISV-canvas-connection' H:[find.nextButton]-(0)-|   (active, names: find.nextButton:0x7f93e8f359b0, '|':UIStackView:0x7f93c8f0cea0 )>",
    "<NSLayoutConstraint:0x600001b81b30 'UISV-spacing' H:[find.doneButton]-(8)-[UIStackView:0x7f93c8f08e40]   (active, names: find.doneButton:0x7f93c8f14920 )>",
    "<NSLayoutConstraint:0x600001b81c20 'UISV-spacing' H:[UIStackView:0x7f93c8f08e40]-(8)-[find.previousButton]   (active, names: find.previousButton:0x7f93e8f334e0 )>",
    "<NSLayoutConstraint:0x600001b81a90 'UISV-spacing' H:[find.previousButton]-(8)-[find.nextButton]   (active, names: find.nextButton:0x7f93e8f359b0, find.previousButton:0x7f93e8f334e0 )>",
    "<NSLayoutConstraint:0x600001b81860 'UIView-Encapsulated-Layout-Height' UIStackView:0x7f93c8f0cea0.height == 6   (active)>",
    "<NSLayoutConstraint:0x600001b81810 'UIView-Encapsulated-Layout-Width' UIStackView:0x7f93c8f0cea0.width == 0   (active)>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x600001b81a90 'UISV-spacing' H:[find.previousButton]-(8)-[find.nextButton]   (active, names: find.nextButton:0x7f93e8f359b0, find.previousButton:0x7f93e8f334e0 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
--- dealloc @"<UICompatibilityInputViewController: 0x7f939a809800>" 0x0
--- dealloc @"<UIInputWindowController: 0x7f93d9840000>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f939a830200>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93d9855800>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93c9839200>" 0x0
--- dealloc @"<UIInputWindowController: 0x7f93c9808200>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93bb081800>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93bb081200>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93c9868e00>" 0x0
--- dealloc @"<UIInputWindowController: 0x7f93c9033200>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93c9052c00>" 0x0
--- dealloc @"<UICompatibilityInputViewController: 0x7f93e9078800>" 0x0

Project to reproduce issue: https://github.com/dezinezync/FB10170943