How to reproduce:
1. Open the attached “IN-133603_RuntimeBindingError.zip” project
2. Open the “SampleScene” scene
3. Enter Play Mode
4. Select the “DataBindingSource” GameObject
5. In the Game View select an input that is not labeled “objectRef”
6. Delete the text and press Enter/Return
7. Observe the Console and Inspector windows

Actual result: A “Could not set value for target” warning is thrown and the reference is not cleared in the Inspector
Expected result: No warning is thrown and reference is cleared

Reproducible with: 2023.2.0a18, 6000.0.67f1, 6000.3.8f1, 6000.4.0b8, 6000.5.0a6
Could not test with: 2023.2.0a17 (No definitions on a lot of the methods)

Reproducible on: MacOS Sequoia 15.7.3 (M1 Max)
Not reproducible on: No other environments tested

Note: Warning: [UI Toolkit] Could not set value for target of type 'Data' at path 'gameObjectRef': could not convert from 'null (Object)' to 'GameObject'. (PanelSettings)