Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. Build project via Build Profiles window
3. Open Build Analysis window
4. Find “Messages” foldout
5. In “View” dropdown select “Prepare splash screen”
6. Drag the left or right edge of the Build Analysis window to make it narrower
7. Observe error message toggle button
Actual results: The message toggle button becomes hidden as the window narrows
Expected results: The message toggle button remains visible and adapts to the window size
Reproducible with versions: 6000.6.0a6
Can’t test with versions: 6000.0.76f1, 6000.3.15f1, 6000.4.8f1, 6000.5.0b9 (No Build Analysis)
Tested on (OS): Windows 11, macOS Tahoe 26.4.1 (M1)