A custom bindable UIToolkit Element cannot be bound in the Editor when it is inherited from type 'Object'

How to reproduce:
1. Open the “ObjectInhTest.zip“ project
2. Open the “SampleScene“
3. Select the “BugExample.asset“ Asset in the Project tab
4. Observe the Console

Expected result: Nothing is logged
Actual result: A “ Field type ObjectBindable is not compatible with PPtr<$ScriptableObject> property "objField" “ warning is logged

Reproducible in: 6000.0.50f1, 6000.0.51f1, 6000.1.8f1, 6000.2.0b6
Not reproducible in: 2022.1.0a1, 2022.3.63f1, 6000.0.49f1

Reproduced on: Windows 11 Pro (24H2)
Not reproduced on: No other environment tested