“ArgumentNullException” errors thrown in Console when creating an Angle Style Field element from UI Library window

Unity: UI Toolkit Authoring Framework

Fixed

6.6.X

6000.6.0b1

Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. Open UI Library window (right-click in Hierarchy > UI Toolkit > Standard Elements > UI Library)
3. In UI Library find “Angle Style Field” and double click on it to create it
4. In “Open UI stage” pop-up press “Continue” and save UXML file
5. Observe the Console window

Actual results: “ArgumentNullException: Value cannot be null.” errors are thrown in the Console window

Expected results: No errors are thrown in the Console when creating an Angle Style Field from the UI Library

Reproducible with versions: 6000.6.0a7

Can’t test with versions: 6000.6.0a6 and lower (No such feature to create UI Elements in Hierarchy window)

Tested on (OS): macOS Tahoe 26.4.1 (M1)

ArgumentNullException: Value cannot be null.
Parameter name: source
System.Linq.Enumerable.Where[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) (at <aeeed39ecf1c467398e79bb082319f54>:0)
Unity.UI.Builder.DimensionStyleField.TryParseValue (System.String val, System.Single& value) (at /Users/bokken/build/output/unity/unity/Modules/UIBuilder/Editor/Utilities/StyleField/DimensionStyleField.cs:206)
Unity.UI.Builder.DimensionStyleField.SetInnerValueFromValue (System.String val) (at /Users/bokken/build/output/unity/unity/Modules/UIBuilder/Editor/Utilities/StyleField/DimensionStyleField.cs:216)
Unity.UI.Builder.StyleField`1[T].SetValueWithoutNotify (System.String newValue) (at /Users/bokken/build/output/unity/unity/Modules/UIBuilder/Editor/Utilities/StyleField/StyleField.cs:157)
UnityEngine.UIElements.BaseField`1[TValueType].set_valueUXML (TValueType value) (at /Users/bokken/build/output/unity/unity/Modules/UIElements/Core/Controls/InputField/BaseField.cs:254)
UnityEngine.UIElements.BaseField`1+UxmlSerializedData[TValueType].Deserialize (System.Object obj) (at /Users/bokken/build/output/unity/unity/artifacts/LiveReloadableEditorAssemblies/Modules/Release_Mono/Unprocessed/Unity.UIToolkit.SourceGenerator/Unity.UIToolkit.SourceGenerator.UxmlSerializedDataGenerator/UnityEngine.UIElements.BaseField_1.gen.cs:49)
Unity.UI.Builder.StyleField`1+UxmlSerializedData[T].Deserialize (System.Object obj) (at /Users/bokken/build/output/unity/unity/artifacts/LiveReloadableEditorAssemblies/Modules/Release_Mono/Unprocessed/Unity.UIToolkit.SourceGenerator/Unity.UIToolkit.SourceGenerator.UxmlSerializedDataGenerator/Unity.UI.Builder.StyleField_1.gen.cs:31)

“ArgumentNullException” errors thrown in Console when creating an Angle Style Field element from UI Library window

Unity: UI Toolkit Authoring Framework

Fixed

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“ArgumentNullException” errors thrown in Console when creating an Angle Style Field element from UI Library window

Unity: UI Toolkit Authoring Framework

Statuses

Fixed

Resolution Notes

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?