Continuous MissingReferenceException after deleting UXML file

Unity: UI Toolkit Authoring Framework

UI Toolkit

Won't Fix

2023.3.X

2023.2.X

2023.1.X

2022.2.X

The issue could not be reproduced with version 2022.3.16f1, 2023.2.4f1 and 2023.3.0b4 using the provided steps.

Repro:

Create a new project.
Create UI Document in Hierarchy. (GameObject -> UI Toolkit -> UI Document)
Import attached UXML file.
Attach imported UXML to UI document's 'Source Asset' field.
Delete the imported UXML file in project view.
Delete the UI document in hierarchy.

Expected Outcome: Errors stop filling up the console.
Actual Outcome: Errors reach 999+ within seconds after clearing the console.

Reproducible in 2022.2.5f1, tested on Windows 10.
Could not reproduce with UI Toolkit 1.0.0-preview.18 and 2020.3.41f1.

Have not extensively regression tested the issue - please contact the assigned ticket reporter if you need further testing or information.

Error Message:
GIF of console errors attached to ticket.

MissingReferenceException: The object of type 'VisualTreeAsset' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
UnityEngine.Object.get_name () (at <f45a99ffbb9f4d0580258c77e560b3ab>:0)
UnityEngine.UIElements.VisualTreeAsset.Instantiate () (at <91595155ebb442339abb5402bb548a5e>:0)
UnityEditor.UIElements.VisualTreeAssetEditor.UpdatePreviewTexture (System.Int32 width, System.Int32 height) (at <6ac5e7e1619a4ba7b29c228ba4ede87d>:0)
UnityEditor.UIElements.VisualTreeAssetEditor.Update () (at <6ac5e7e1619a4ba7b29c228ba4ede87d>:0)
UnityEditor.EditorApplication.Internal_CallUpdateFunctions () (at <00d63564201b48698d51680c10078897>:0)

Continuous MissingReferenceException after deleting UXML file

Unity: UI Toolkit Authoring Framework

Won't Fix

Prioritise and Follow this issue

Have a workaround or additional info about this issue?

Continuous MissingReferenceException after deleting UXML file

Unity: UI Toolkit Authoring Framework

Statuses

Won't Fix

Resolution Notes

2023.3.XWon't FixThe issue could not be reproduced with version 2022.3.16f1, 2023.2.4f1 and 2023.3.0b4 using the provided steps.

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?