Reproduction steps:
1. Create a new project
2. GameObject > UI Toolkit > Legacy > UI Document
3. Window > Analysis > Profiler
4. Select UI Toolkit Module, right-click on the data column headers and disable all columns
5. Enter Play mode to start profiling
6. Select UI Toolkit Module and observe the results
Actual result: Empty selectable result is displayed
Expected result: Result with some relevant information is displayed
Reproducible with: 6000.6.0a3, 6000.6.0a4
Couldn’t reproduce with: 6000.0.74f1, 6000.3.14f1, 6000.4.5f1, 6000.5.0b6, 6000.6.0a2 (No columns in UI Toolkit panel)
Reproduced on: Windows 11, macOS Tahoe 26.4 (M4)