[Bug] [macOS] [XF 5.0] App crash when rendering label with FormattedText

[Seuleuzeuh]

Description

App crash when display the default main page of a newly Xamarin project.

System.InvalidOperationException
Cannot convert a NSColorType.Catalog color without specifying the color space, use the overload to specify an NSColorSpace

System.InvalidOperationException: Cannot convert a NSColorType.Catalog color without specifying the color space, use the overload to specify an NSColorSpace
at Xamarin.Forms.Platform.MacOS.ColorExtensions.ToColor (AppKit.NSColor color) [0x0000a] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.FormattedStringExtensions.ToAttributed (Xamarin.Forms.Span span, Xamarin.Forms.BindableObject owner, Xamarin.Forms.Color defaultForegroundColor, Xamarin.Forms.TextAlignment textAlignment, System.Double lineHeight) [0x000d8] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.FormattedStringExtensions.ToAttributed (Xamarin.Forms.FormattedString formattedString, Xamarin.Forms.BindableObject owner, Xamarin.Forms.Color defaultForegroundColor, Xamarin.Forms.TextAlignment textAlignment, System.Double lineHeight) [0x0001b] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.LabelRenderer.UpdateFormattedText () [0x00033] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.LabelRenderer.UpdateTextPlainText () [0x0004d] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.LabelRenderer.UpdateText () [0x0001e] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.LabelRenderer.OnElementChanged (Xamarin.Forms.Platform.MacOS.ElementChangedEventArgs1[TElement] e) [0x0008c] in <0f206d9b19e34bb492c169092feaa0b2>:0 at Xamarin.Forms.Platform.MacOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x0017a] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.MacOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in <0f206d9b19e34bb492c169092feaa0b2>:0 at Xamarin.Forms.Platform.MacOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00014] in <0f206d9b19e34bb492c169092feaa0b2>:0 at Xamarin.Forms.Platform.MacOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x0003e] in <0f206d9b19e34bb492c169092feaa0b2>:0 at Xamarin.Forms.Platform.MacOS.VisualElementPackager.Load () [0x0001e] in <0f206d9b19e34bb492c169092feaa0b2>:0 at Xamarin.Forms.Platform.MacOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x0012e] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.VisualElementRenderer`1[TElement].Xamarin.Forms.Platform.MacOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00014] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x0003e] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.VisualElementPackager.Load () [0x0001e] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.PageRenderer.Init () [0x0001b] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.PageRenderer.ViewWillAppear () [0x00000] in <0f206d9b19e34bb492c169092feaa0b2>:0
at at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSend_IntPtr(intptr,intptr,intptr)
at AppKit.NSWindow.set_ContentViewController (AppKit.NSViewController value) [0x00025] in /Library/Frameworks/Xamarin.Mac.framework/Versions/6.20.2.2/src/Xamarin.Mac/AppKit/NSWindow.g.cs:8558
at Xamarin.Forms.Platform.MacOS.FormsApplicationDelegate.UpdateMainPage () [0x00034] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.FormsApplicationDelegate.SetMainPage () [0x00000] in <0f206d9b19e34bb492c169092feaa0b2>:0
at Xamarin.Forms.Platform.MacOS.FormsApplicationDelegate.DidFinishLaunching (Foundation.NSNotification notification) [0x00041] in <0f206d9b19e34bb492c169092feaa0b2>:0
at XFCrashRepro.MacOS.AppDelegate.DidFinishLaunching (Foundation.NSNotification notification) [0x00013] in /Users/chaton/Projects/XFCrashRepro/XFCrashRepro.MacOS/AppDelegate.cs:31
at at (wrapper managed-to-native) AppKit.NSApplication.NSApplicationMain(int,string[])
at AppKit.NSApplication.Main (System.String[] args) [0x00040] in /Library/Frameworks/Xamarin.Mac.framework/Versions/6.20.2.2/src/Xamarin.Mac/AppKit/NSApplication.cs:109
at XFCrashRepro.MacOS.MainClass.Main (System.String[] args) [0x00017] in /Users/chaton/Projects/XFCrashRepro/XFCrashRepro.MacOS/Main.cs:11

Note : I was initially tested an issue with custom font integration but a first problem has appeared.

Steps to Reproduce

Use the attached repo and just launch it. If you comment the label with the FormatedText in the MainPage the app launch without crashing.

Basic Information

• Version with issue: 5.0.0.1487-pre1
• Last known good version: 4.8
• IDE: Visual Studio Enterprise 2019 for Mac. Version 8.7.8 (build 4)
• Platform Target Frameworks:
  • macOS : Version: 6.20.2.2
• Nuget Packages: Xamarin.Forms 5.0.0.1487-pre1

Reproduction Link

XFCrashRepro.zip

[beeradmoore]

Same issue with 5.0.0.1709-pre4, rolling back to 4.8 allowed my app to run.

[ajtruckle]

I am new to building MacOS with Xamarin on Visual Studio for Mac and just got this exception too.

See:

https://stackoverflow.com/questions/66128370/how-to-fix-this-exceptioncannot-convert-a-nscolortype-catalog-color-without-spe

Please help.