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Fixed
Votes
0
Found in
6000.2.0a3
Issue ID
UUM-97150
Regression
Yes
"InvalidOperationException: Cannot modify VisualElement hierarchy during layout calculation" error is logged and Player Settings window becomes blank after changing Scripting backend and Api Compatibility Level fields
Steps to reproduce:
1. Create a new project
2. Change Scripting backend to IL2CPP (Edit > Project Settings... > Player)
3. Change Api Compatibility Level to the that's not selected
4. Wait for script compiling to finish loading and observe the Console and Player Settings windows
Actual results:
{code:java}
InvalidOperationException: Cannot modify VisualElement hierarchy during layout calculation
UnityEngine.UIElements.VisualElement+Hierarchy.Clear () (at /Users/bokken/build/output/unity/unity/Modules/UIElements/Core/VisualElementHierarchy.cs:673)
UnityEngine.UIElements.VisualElement.Clear () (at /Users/bokken/build/output/unity/unity/Modules/UIElements/Core/VisualElementHierarchy.cs:256)
UnityEditor.SettingsWindow.ProviderChanged (UnityEditor.SettingsProvider lastSelectedProvider, UnityEditor.SettingsProvider newlySelectedProvider) (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:276)
UnityEditor.SettingsTreeView.SelectionChanged (System.Collections.Generic.IList`1[T] selectedIds) (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsTreeView.cs:66)
UnityEditor.SettingsTreeView.FocusSelection (System.Int32 selectedId) (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsTreeView.cs:46)
UnityEditor.SettingsWindow.SelectProviderByName (System.String name, System.Boolean ignoreLastSelected) (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:111)
UnityEditor.SettingsWindow.RestoreSelection () (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:242)
UnityEditor.SettingsWindow.InitProviders () (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:168)
UnityEditor.SettingsWindow.DrawTreeView () (at /Users/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:500)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at /Users/bokken/build/output/unity/unity/Modules/UIElements/Core/IMGUIContainer.cs:403)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&) (at /Users/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:219)
{code}
error is thrown and Player Settings window becomes blank
Expected results: No errors are thrown and Scripting backend and Api Compatability Level fields change to the selected ones in the Player Settings window
Reproducible with versions: 6000.2.0a1, 6000.2.0a3
Not reproducible with versions: 2021.3.48f1, 2022.3.58f1, 6000.0.38f1, 6000.1.0a10, 6000.1.0b5
Tested on (OS): macOS Sequoia 15.2 (Intel)
Notes:
- If issue is not reproducing repeat step 3 a few times, sometimes it also reproduces after Scripting backend to Mono and back
- Additionally "Leak Detected : Persistent allocates 2 individual allocations. To find out more please enable 'Settings > Jobs > Leak Detection Level > Enabled With Stack Trace' and reproduce the leak again." message is logged
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Resolution Note:
Fixed by another internal issue: UUM-97149: Changing editor theme causes InvalidOperationException