How to reproduce:
1. Open the project "case_1222843-LocalizationAssetTables"
2. Open the Localization Tables window by selecting Window -> Asset Management -> Localization Tables in the Menu Bar
3. Select the Edit Table option
4. Drag "german-flag" Texture from the Project window to all Texture fields in the Asset Tables
5. Save the Scene and close the project
6. Reopen the project and open the Localization Tables window again
7. Observe the results in the Asset Tables window

Expected results: "german-flag" Texture is applied to all the Texture fields in the Asset Tables window
Actual results: all Texture fields are empty in the Asset Tables window

Reproducible with: 0.5.0, 0.5.1, 0.6.0, 0.6.1 (2019.3.3f1, 2020.1.0a25, 2020.2.0a1)
Not reproducible with: 0.4.0 (2019.3.3f1, 2020.1.0a25, 2020.2.0a1)

Could not test with: 2017.4.37f1 because the Localization package is not supported, 2018.4.17f1 (0.2.3-preview) because the Localization package does not have some features