[regression/8.0.3] Migration breaks the Editor control in multiple ways

[FreakyAli]

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Description

The editor stops working properly after upgrading to .NET 8, and the following properties break when you do especially on iOS, I am not sure if this breaks to the same level on iOS.

The following properties break:

• Placeholder - The position of Placeholder is in the middle for some reason.
• VerticleTextAlignment- Setting this to start won't change the placeholder property does not change anymore
• VerticleOptions- Setting this to start won't change the position of place either.

Just to be clear this worked fine with .NET 7.

https://github.com/dotnet/maui/assets/31090457/48db6465-ce7c-4556-b0b9-4aabb69d3844

Steps to Reproduce

• Create a new Maui app

• Add an Editor to your page

• it starts misbehaving like in the video

  <Editor
    FontSize="Large"
    HeightRequest="200"
    VerticalTextAlignment="Start"
    Keyboard="Chat"
    Placeholder="This is an editor"
    TextColor="Purple" />
  

Link to public reproduction project repository

https://github.com/FreakyAli/Maui.FreakyControls/tree/entry_issue

Version with bug

8.0.3

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

7.0.101

Affected platforms

iOS

Affected platform versions

iOS 17.0, Did not test on lower versions yet

Did you find any workaround?

NOOO

Relevant log output

NA

[XamlTest]

Verified this on Visual Studio Enterprise 17.9.0 Preview 2(8.0.3). Repro on iOS 17.0, not repro on Android 14.0-API34 with below Project: MAUI.FreakyControls.zip

[billreiss]

The issue is that the Placeholder label defaults to vertical Center alignment and there's no way to change it, and it doesn't respond to any other settings. As a quick and dirty hack workaround you can use reflection to set it. I added this code to MauiProgram.cs

#if IOS
	Microsoft.Maui.Handlers.EditorHandler.Mapper.AppendToMapping("MyCustomEditorHandler", (handler, view) =>
	{
		var tv = handler.PlatformView as MauiTextView;
		var field = typeof(MauiTextView).GetField("_placeholderLabel", BindingFlags.NonPublic | BindingFlags.GetField | BindingFlags.Instance);
		var label = field.GetValue(tv) as MauiLabel;	
		var prop = typeof(MauiLabel).GetProperty("VerticalAlignment", BindingFlags.NonPublic | BindingFlags.Instance);
		prop.SetValue(label, UIKit.UIControlContentVerticalAlignment.Top, null);
	});
#endif

[kubaflo]

This issue is not replicable on the latest main branch.

[FreakyAli]

Closing this as it's working now! Thanks