How to reproduce:
1. Open the attached project "1353263.zip"
2. In the Project window, press on "New Table" Asset
3. In the Inspector window, press on "Open in Table Editor"
4. In the Inspector window, select the "Remove Missing Pulled Keys" checkbox if it's not selected
5. In the Inspector window, press on "Pull"

Expected results: No errors are visible in the Console and Key "A4" is deleted from the table in Table Editor
Actual results: NullReferenceException error is thrown in the Console window and Key "A4" is not deleted from the table in Table Editor

Reproducible with: 1.0.0-pre.9 (2019.4.30f1, 2020.3.17f1, 2021.1.19f1, 2021.2.0b11, 2022.1.0a8), 1.0.0-pre.10 (2019.4.30f1, 2020.3.17f1, 2021.1.19f1, 2021.2.0b11, 2022.1.0a8)
Not reproducible with: 1.0.0-pre.8 (2019.4.30f1, 2020.3.17f1, 2021.1.19f1, 2021.2.0b11, 2022.1.0a8)