Steps to reproduce:

1. Create a new Unity project
2. Open a second Hierarchy window (Right-Click > Add Tab > Hierarchy)
3. Dock both Hierarchy windows side by side
4. In Hierarchy Window A, type something into the Search field (e.g., Cube)
5. The search immediately applies in the Hierarchy Window B as well
6. In Hierarchy Window A, change the Sorting option (e.g., from Transform Order to Alphabetical)
7. Observe the result in Hierarchy Window B

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Actual results: The sorting change is not applied to the Hierarchy Window B

Expected results: 

• Either both Search and Sorting should be global across all Hierarchy windows,
• Or both should be unique per window

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Reproducible with versions: 6000.2.2f1, 6000.3.0a5

Can’t test with versions: 6000.1.16f1 (no sorting feature)

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Tested on (OS): Windows 11