Steps to reproduce:
1. Make sure object selector is using advanced search (preferences->search->search engine)
2. click on object picker in inspector(for example, mesh field)
3. In search window, make sure table view is enabled
4. click on + sign to add column
Actual result: search window closes.
Expected result: search window should not close
Reproducible with versions: latest trunk , originally found with 2023.3.0b7.3743.rat/search-more-fixes.323
Tested on (OS): Mac/linux only. Windows behaves correctly.
more context -https://unity.slack.com/archives/C02UMB59A84/p1706890076225019