How to reproduce:
1. Open the user's attached project
2. In the Project window, go to Assets/localization and select the Asset "New Table"
3. In the Inspector view, click the Save button
4. Attempt to save the CSV file in any directory

Expected result: the file is saved and no errors are thrown
Actual result: the file is not saved, an error is thrown to the Console (FileNotFoundException: Could not find file "\[...]/New Table.csv")

Reproducible with: 1.0.0, 1.0.1, 1.0.2, 1.0.3 (2019.4.31f1, 2020.3.21f1, 2021.1.26f1, 2021.2.0b16, 2022.1.0a12)
Not reproducible with: 1.0.0-pre.10 (2019.4.31f1, 2020.3.21f1, 2021.1.26f1, 2021.2.0b16, 2022.1.0a12)

Notes:
1. The issue does not occur if there is already a file with the same name in the exporting directory
2. After the file is saved (including Localization 1.0.0-pre.10, where the initial error does not occur), an exception (InvalidOperationException: Stack empty.) is thrown to the Console