*Steps to reproduce:*
# Create a new Unity project
# Go to Edit → Project Settings
# Select the Physics 2D section
# Select the "Layer Collision Matrix" tab
# Drag the middle vertical bar of the Project Settings window to horizontally resize
# Observe the "Layer Collision Matrix"

*Actual results:* When resizing, the Layer Collision Matrix header label overlaps with the General Settings label

*Expected results:* UI labels should not overlap. The Layer Collision Matrix and General Settings headers should remain clearly separated when resizing. The minimum width must be set.

*Reproducible with versions:* 6000.3.0a5, 6000.3.0b1

*Not reproducible with versions:* 6000.0.56f1, 6000.1.16f1, 6000.2.2f1, 6000.3.0a4

*Tested on (OS):* macOS 15.6 M4