Inspector options disappear when toggling “Repeat” and “Allow Multiple Repeats per Tick” on the On Start node in the Behavior Graph until node is reselected

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Install the Behavior package (com.unity.behavior)
3. Create a new Behavior Graph (Assets > Create > Behavior > Behavior Graph)
4. Open the newly created Behavior Graph
5. Select the "On Start" node
6. Toggle the "Repeat" option in the Inspector
7. Observe the Inspector

Actual results: Inspector options disappear

Expected results: Inspector options remain

Reproducible with versions: 1.0.15 (6000.0.76f1, 6000.3.17f1, 6000.4.10f1), 1.0.16 (6000.0.76f1, 6000.3.17f1, 6000.4.10f1, 6000.5.0b11, 6000.6.0a6)

Not reproducible with versions: 1.0.14 (6000.0.76f1, 6000.3.17f1, 6000.4.10f1)

Can’t test with versions: 1.0.14, 1.0.15 (6000.5.0b11, 6000.6.0a6) (due to [Internal link])

Tested on (OS): MacOS Silicon Tahoe 26.3