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I am receiving this warning in the debugger console when I launch my app on iPad Xcode 7 beta 6. There was no such warning till Xcode 6. I don't understand why it may have come and that too, only on iPad.

According to an Apple forum thread it could be a bug from Apple's side. Has anyone found a solution for this?

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14
  • 2
    Just wanted to let you know that the same bug occured to me when launching a custom keyboard on the iPad Commented Sep 13, 2015 at 18:44
  • 4
    I have this warning when presenting modal UIActivityViewController. Commented Sep 17, 2015 at 14:58
  • 3
    Just migrated to Xcode 7 and I have the same warning as soon as a UITextView becomes first responder... Commented Sep 17, 2015 at 23:32
  • 22
    I have this pop-up when a UITextField has to becomeFirstResponder, the time the textField needs to actually becomeFirstResponder is also increased significantly. Commented Sep 18, 2015 at 13:10
  • 3
    See this SO Question - looks like a bug and logged with Apple as such. Commented Oct 19, 2015 at 15:26

5 Answers 5

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24

In order to get rid of this error un check clip to bounds option and put scale to fill to view to all view,UIStackView you have used in your project.

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2 Comments

Verified. I am on Version 9.2 (9C40b) and this was the cause for me. Nice one
Thanks, uncheck Clip to Bounds from UIStackView removed the warnings
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This is a bug in iOS, and still exists in the latest version, iOS 9.1. If you're reading this, please do us all a favor and file a bug report with Apple.

You may duplicate my radar (id: 23666339), which can be viewed on Open Radar here: https://openradar.appspot.com/23666339

The bug causes the keyboard to take forever to appear, and exists only on iPad as well as the iPad simulators.

UPDATE: This issue has been resolved as of iOS 9.2 (13C75).

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thank you for validating me on this - thought it was a problem with our app!
I have noted that this still exists on 9.3 -
9

It could happen because you changed drawing attribute of the StackView:

enter image description here

when I set clips to bounds to true I get this warning

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1

In case anybody is facing this issue because of a UIStackView in iOS 14, please check out this article:

https://useyourloaf.com/blog/stack-view-background-color-in-ios-14/

Long story short:

In iOS 14, UIStackView has changed from using a CATransformLayer to using a CALayer. I saw this first mentioned by Renaud Lienhart (@layoutsubviews) and then confirmed by David Duncan (@rincewindsama). This change is not (yet) mentioned in any release note or documentation (bug report FB8363575).

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0

Problem Warning -> <CATransformLayer: 0x600000946e40> - changing property masksToBounds in transform-only layer, will have no effect

Solution = Simply uncheck the clip to bound from UIstackview box.

enter image description here

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