[Entry] [Android] Cursor makes undesired jumps with masked behaviour

[Asfiroth]

Description

Using the .NET MAUI Entry control works fine in both android and iOS, but applying behaviours such as MaskedBehvior from .NET MAUI Community Toolkit (or others) ends up un randomic cursor movements on Android, iOS doesn't present this strange behaviour.

Steps to Reproduce

1. Create a MAUI App.
2. Download package CommunityToolkit.Maui and follow instructions to make it work.
3. On Main page put a entry with behaviour:

<Entry>
                <Entry.Behaviors>
                    <mtc:MaskedBehavior Mask="XXXX XXXX XXXX XXXX" />
                </Entry.Behaviors>
            </Entry>

4. Start writing and see randomic cursor dance.

Link to public reproduction project repository

https://github.com/Asfiroth/MauiEntryBehaviourIssue

Version with bug

7.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 12 and up

Did you find any workaround?

Yes, modifying the Entry handler for android adding this:

On ConnectHandler:

PlatformView.TextChanged += PlatformViewOnTextChanged;

On DisconnectHandler:

PlatformView.TextChanged -= PlatformViewOnTextChanged;

This is the event handler for text changed event

private void PlatformViewOnTextChanged(object sender, TextChangedEventArgs e)
    {
        if (sender is not AppCompatEditText editText) return;
        
        if (string.IsNullOrWhiteSpace(editText.Text)) return;
        
        var looper = Looper.MyLooper();
        if (looper != null)
        {
            var handler = new Handler(looper);
            handler.Post(() =>
            {
                editText.SetSelection(editText.Text.Length);
            });
        }else
        {
            editText.SetSelection(editText.Text.Length);
        }
    }

It's not perfect but does the job, any help to make this better is appreciated.

Relevant log output

No response

[rmarinho]

This should be fixed by #12750 . The fix should be in net8-preview1

@jfversluis can you test maui main with the CommunityTolkit ?

[ghost]

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

[ghost]

Hi @Asfiroth. We have added the "s/try-latest-version" label to this issue, which indicates that we'd like you to try and reproduce this issue on the latest available public version. This can happen because we think that this issue was fixed in a version that has just been released, or the information provided by you indicates that you might be working with an older version.

You can install the latest version by installing the latest Visual Studio (Preview) with the .NET MAUI workload installed. If the issue still persists, please let us know with any additional details and ideally a reproduction project provided through a GitHub repository.

This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[Asfiroth]

This should be fixed by #12750 . The fix should be in net8-preview1

Hi @rmarinho would that fix make it to net7-latest version?

[rmarinho]

The bar for net7 fixes is high now, but i will suggest as backport and we will discuss on our team meeting.

But if you can confirm it works on net8 it will be great. Thanks

[Phantom-KNA]

I have the same issue, i hope work on net.8

[ghost]

Hello lovely human, thank you for your comment on this issue. Because this issue has been closed for a period of time, please strongly consider opening a new issue linking to this issue instead to ensure better visibility of your comment. Thank you!