[Admin UI Classic] Creating/editing link fields in multiple `DataObject`s/`ObjectBrick`s at the same time fails

[jdreesen]

Affected Version

2024.4 - LTS

Affected capability

Data Objects

Steps to reproduce

• go to https://demo.pimcore.fun/admin/
• open Settings → Data Objects → Classes
• open one of the existing classes → add a new field of type Link somewhere (right-click on the structure, then Add Data Component → Other → Link)
• open another one of the existing classes → also add a new field of type Link somewhere

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The same happens when the DataObjects (or ObjectBricks) already contain link fields — opening the first one succeeds, open the second one fails.

Actual Behavior

The second one breaks 💥

The panel stays white (empty) and the browser console shows the following error: [E] Ext.ComponentManager.register(): Duplicate component id "allowedTypes"

Expected Behavior

Creating/editing link fields when more than one DataObject/ObjectBrick with links fields is open in the backend works.

[jdreesen]

The latest Pimcore 2025.4 (v12.3.10 with admin ui classic v2.3.7) is still broken.