Steps to reproduce:

1.  Create a new project
2. Open Window > Search > New Window
3. Set the window to table view
4. Search for anything in the search field (e.g. Cube)
5. Observe as the results window gets alternating row background applied
6. Clear search field with X or selecting everything and deleting

Actual results: 
The alternating row background is still present

Expected results:
The alternating row background is cleared and no longer visible

Reproducible with versions: 
6000.0.66f1, 6000.3.6f1, 6000.4.0b6, 6000.5.0a5

Tested on (OS): 
MacOS Sequoia 15.7.3
Windows 11

Notes:

•  Switching from table view to any other view and back to table view again clears the alternating lines
• Deleting the search result letters one by one removes the alternating row background