[regression/7.0.0] [MAUI-Windows] "Element not found. (0x80070490)" exception occurs when ScrollView is inside a FlexLayout

[Deepak1799]

Description

When placing scrollview inside a flexlayout, I am facing the following exception in this latest release.

Steps to Reproduce

1. Run the linked MAUI sample project.
2. The exception will occur directly.

Note: This crash occurs from the latest release of MAUI 6.0.486

Link to public reproduction project repository

https://github.com/Deepak1799/.NET-MAUI-Samples/tree/master/ScrollViewInFlexLayout

Version with bug

6.0.486 (current)

Last version that worked well

6.0.424

Affected platforms

Windows

Affected platform versions

Windows SDK 10.0.19041.0

Did you find any workaround?

This is not a workaround, but setting HeightRequest and WidthRequest to the flex layout does not cause the crash.

Relevant log output

Error Message: "Element not found. (0x80070490)"
Error Code: -2147023728

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.

[holecekp]

I have the same problem but an app with a FlexLayout crashes with the same exception even without a ScrollView. I have created a simple repro project for it:
https://github.com/holecekp/MauiBugFlexLayout

The crashes are on Windows only. It does not crash on Android, but the FlexLayout is rendered incorrectly there.

[hartez]

Digging into this, it appears that "Element not found" is a red herring; the underlying problem is a layout cycle.

[Qws]

I have this issue too.

Maui needs a dynamic and reliable flex solution. That dynamically wraps the controls based on container size.

In UWP/WinUI3 there is GridView. In HTML/CSS there is Flex display.