I’m experiencing a crash in WKWebView on iOS 26 Developer Beta 5 and Beta 6 with the following exception:
CALayer position contains NaN: [nan 65]
The crash occurs when the following CSS properties are applied to content displayed in WKWebView: -webkit-user-select: none; -webkit-touch-callout: none;
This issue happens consistently whenever these styles are set, leading to the crash inside WKWebView.
Is this a known bug in the current iOS 26 betas, or is there a recommended workaround?
same problem.
so am i, "How did you pinpoint that it was caused by CSS properties?" @qwwp
Did you add breakpoints in these functions?
-[CALayer setPosition:]
-[CALayer setFrame:]
-[UIView setFrame:]
-[UIView setBounds:]
I found this solution by setting WKWebview's configuration or using xcode26 to build project
self.webview.configuration.preferences.textInteractionEnabled = NO;
maybe u can try it
This has been resolved in iOS 26 beta 7.