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I have an issue with CallKit where some of the buttons blink when tapping on mute button.

This happens only when I set iconTemplateImageData to CXProviderConfiguration.

I made a minimal project for reproducing the issue.

https://github.com/kenjitayama/CallKitIconBlink

There is an animated gif on the top page.

Does anyone have this issue, or know how to fix it?

Kenji
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  • Have you verified that the image you are setting in iconTemplateImageData is a square with side length of 40 points? Also try what happens if you use some other image that has those dimensions. I assume that the problem does not occur if you do not set iconTemplateImageData? – Raphael May 04 '20 at 10:02
  • Yes, the images are from a CallKit example project called Speakerbox, and they are 40 points square size. https://github.com/Lax/Learn-iOS-Swift-by-Examples/tree/master/Speakerbox/Speakerbox/Assets.xcassets/IconMask.imageset My own images had the same issue. Yes, the problem does not occur if I comment out where I set iconTemplateImageData. – Kenji May 07 '20 at 01:32
  • Maybe it actually is a bug. Have you filed it with Apple yet? – Raphael May 19 '20 at 11:02

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