How to reproduce:
1. Create a new HDRP Unity project
2. Create an Empty GameObject and add a "Light Probe Group" Component in the Inspector
3. In the Scene View, in Tools, click "Edit Light Probe Group" tool
4. Observe the Overlay Menu in the Scene View
Expected result: The "Edit Light Probes" overlay button appears with an icon and clicking on it hides and shows the related window
Actual results: The "Edit Light Probes" overlay has "EL" instead of an icon and clicking it doesn't do anything
Reproducible with: 6000.0.22f1
Can't test with: 2021.3.44f1, 2022.3.49f1 (No Overlay Menu, different "Edit Light Probes" functionality)
Reproducible on: macOS Sequoia 15.0 (M1)
Not reproducible on: No other environment tested