Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Create a new Reflection Probe (GameObject > Light > Reflection Probe)
3. Enable the Box Projection Bounds edit tool in the Inspector window
4. Click and drag one of the sides of the box over the Editor toolbar (a bit to the left side)
5. Observe the Scene View

Actual results: The Box Projection Bounds start flickering and resetting position every frame, and at some point completely breaks and editing is impossible

Expected results: The Box Projection Bounds move smoothly and do not break

Reproducible with versions: 6000.3.0a2, 6000.3.0b1

Not reproducible with versions: 6000.0.57f1, 6000.2.3f1, 6000.3.0a1

Tested on (OS): macOS Silicon Sequoia 15.6.1, Windows 11, Ubuntu 24

Notes:

• Does not reproduce with similar editing tools like the box collider