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Won't Fix

Votes

0

Found in

6000.0.17f1

6000.1.0a7

7000.0.0a1

Issue ID

UUM-79259

Regression

No

VisualElement disappears when selecting its parent in UI Builder

-

Steps to reproduce:
1. Open Unity and load the project.
2. In the Project window navigate to Packages/Automatic Performance Profiler/Editor/UI and open PerformanceManagerControl.uxml Visual Tree Asset in UI Builder
3. Select the #TestList element in the Viewport or in the Hierarchy

Expected result: Highlights the selection and shows all elements
Actual result: The “#VisualElement/#TestList/ScrollVIew/#unity-content-and-vertical-scroll-container” VisualElement disappears

Reproducible with: 6000.0.0f1, 6000.0.17f1
Could not test with: 2021.3.43f1, 2022.3.44f1, 2023.3.0b10 (Automatic Performance Profiler package is not supported)

Testing environment: macOS Sonoma 14.5 (Intel), Windows 10 (by user)
Not reproducible on: No other environment tested

Note: Dock or undock the UI Builder window to make the VisualElement reappear

  1. Resolution Note:

    Looks like an issue with the package used in the project. The TestList is using the dataSource to apply a different itemsSource during the AttachToPanelEvent, which will only happen once. Since the binding-source-selection-mode is set to AutoAssign, the runtime data binding system will then take over as soon as there's a change to the data source, binding to the actual data source, and not the ActionList created from it.

    The code should probably instead set a binding between the ActionList to the itemsSource. Here's more info about how to bind a the itemsSource of a ListView.
    https://docs.unity3d.com/6000.0/Documentation/Manual/UIE-runtime-binding-list-view.html

    For more questions, please reach out on https://discussions.unity.com/lists/ui

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Comments (1)

  1. darrin98

    Sep 02, 2024 06:10

    Steps to Reproduce:

    Open Unity and load the project.
    In the Project window, navigate to Packages/Automatic Performance Profiler/Editor/UI.
    Open the PerformanceManagerControl.uxml file in UI Builder.
    In the Viewport or Hierarchy, select the #TestList element.
    Expected Result:
    The selected element is highlighted, and all child elements are displayed correctly.

    Actual Result:
    The #VisualElement/#TestList/ScrollView/#unity-content-and-vertical-scroll-container VisualElement disappears from the UI Builder Viewport.

    Reproducible With:

    Unity versions: 6000.0.0f1, 6000.0.17f1.
    Could Not Test With:

    Unity versions: 2021.3.43f1, 2022.3.44f1, 2023.3.0b10 (Automatic Performance Profiler package not supported).
    Testing Environment:

    macOS Sonoma 14.5 (Intel).
    Windows 10 (tested by the user).
    Not Reproducible On:

    No other environments tested.
    Note:
    Docking or undocking the UI Builder window causes the VisualElement to reappear.

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