Assets dependencies load in the wrong order resulting in "None" being referenced

Reproduction steps:
1. Open attached project "Reference.zip"
2. In Project window, select Assets/Content/MTFLocalizationManager.asset
3. In Inspector window, observe Startup Sources dropdown
4. If there aren't any missing references, restart the editor and repeat the steps

Expected result: No references are missing
Actual result: Many of the references are missing

Reproducible with: 2019.4.12f1
Could not test with: 2018.4.28f1, 2020.1.8f1, 2020.2.0b6 (console errors break project)

Workarounds:
1. Reloading the asset fixes the problem.
2. Wrapping the contents of the function in an EditorApplication.delayCall fixes the problem.