Reproduction steps:
1. Open the attached "repro_IN-48138.zip" project
2. Open the "SquareGrid.cs" file
3. Change anything (f.e., add a comment) and save the file
4. Go back to Unity Editor and let it recompile the script

Expected result: The script is recompiled without any errors
Actual result: A lot of "Objects are trying to be loaded during a domain backup. This is not allowed as it will lead to undefined behaviour!" errors appear in the Console

Reproduced with: 1.4.2 (2022.3.4f1), 1.4.4 (2022.3.7f1, 2023.1.8f1, 2023.2.0b3)
Not reproduced with: 1.4.1 (2022.3.4f1)
Couldn't test with: 1.4.4 (2021.3.29f1) - couldn't resolve package errors

Reproduced on: Windows 10