Steps to reproduce:

1. Open the attached project
2. Open the SampleScene
3. In the Entities Hierarchy window, click on the Open search window button
4. Observe that the Search Node Hierarchy window has 2 data columns - "Name" and "Index"
5. Right-click on one of the column names
6. In the Contextual menu, select the Reset Columns option
7. Observe the Search Node Hierarchy window's data columns again

Actual results: Additional columns are added, indicating that the window does not open with all of the default columns enabled

Expected results: The number and types of columns do not change, as the window was just opened and the columns were not modified

Reproducible with versions: 2022.3.74f1, 6000.0.71f1, 6000.3.11f1, 6000.4.0f1, 6000.5.0a9, 6000.6.0a1

Tested on (OS): macOS 26.3.1

Notes:

• In the versions older than 6000.5.0a1, the Entities' Systems window also contains a 'open in search' button that opens the "Search Systems" window. That window opens with all of the default columns enabled and acts as described in the expected results