Steps to reproduce:

1. Create a new Unity project using Universal 3D template
2. Create a new Shader Graph (Assets > Create > Shader Graph > URP > Lit Shader Graph)
3. Click the "Open Shader Editor" button in the Inspector window
4. Click the right side of the triangle button all the way to the right side of the Shader Editor window
5. Observe the Shader Editor window

Actual results: The dropdown does not open if clicked on the right side of the button

Expected results: The dropdown opens when clicked anywhere on the button

Reproducible with versions: 6000.0.49f1, 6000.1.3f1, 6000.2.0b1

Tested on (OS): macOS Silicon Sequoia 15.3

Notes:

• The click animation is played on the button, but the dropdown does not appear