Bug 51563 - Editor Effect throws exception in Xamarin Forms
Summary: Editor Effect throws exception in Xamarin Forms
Alias: None
Product: iOS
Classification: Xamarin
Component: Mono runtime / AOT compiler ()
Version: master
Hardware: Macintosh Mac OS
: Normal critical
Target Milestone: Untriaged
Assignee: Zoltan Varga
Depends on:
Reported: 2017-01-16 19:54 UTC by Rasmus Christensen
Modified: 2017-07-13 17:56 UTC (History)
16 users (show)

Tags: ac ios
Is this bug a regression?: ---
Last known good build:

sample code (73.69 KB, application/zip)
2017-01-16 19:54 UTC, Rasmus Christensen

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Description Rasmus Christensen 2017-01-16 19:54:22 UTC
Created attachment 19359 [details]
sample code

Description of Problem:
Exception is thrown when effect is applied to Editor on iOS

Steps to reproduce the problem:
1.Create a new XF project 
2.Add an Editor component 
3.make an effect 
4.apply the effect
5.start the app

Actual Results:

Expected Results:
Editor with effect applied

How often does this happen? 

Additional Information:
Xamarin Forms
Comment 1 iain 2017-01-17 12:51:40 UTC
Thanks for filing the report. It appears to be an exception in the Xamarin.Forms code, so I've reassigned it to that team.
Comment 2 Rasmus Christensen 2017-02-01 10:20:41 UTC
Having the same issue using Beta Channel
Comment 3 Chris King 2017-06-23 18:35:37 UTC
Customer expects the message of unhandled exceptions to be shown if a debugger is attached. What actually happens is the app hangs (sometimes it'll issue a generic exception message tho I cannot reproduce reliably).
Throwing a try/catch around the body of EditorEffectAppPage.ctor will catch an exception with the message:

Xamarin.Forms.Xaml.XamlParseException: Position 9:5. Cannot assign property "Effect": Property does not exists, or is not assignable, or mismatching type between value and property

This message should be displayed after removing the try/catch.

In this case, changing the name "Effect" to "Effects" will prevent the exception.
Comment 4 Joaquin Jares 2017-06-23 18:54:30 UTC
I fixed the hang for 15.3, but I need to reassign this to Runtime for never actually returning the proper exception message.
Comment 5 Rodrigo Kumpera 2017-07-11 16:26:22 UTC
UE capture in the products doesn't depend on the runtime, shipping to the SDK team.