Steps to reproduce:
1. Open "2018.3 empty project for bug report.zip"
2. Navigate to Project -> Assets and open "BugScene"
3. In the Assets folder select "Cube" and open it in Prefab edit mode
4. Notice the console throws an error "Resource ID out of range in GetResource: 1065353216 (max is 1048575)"

Expected results: No errors are displayed when Reflection probes are attached to Anchor Override
Actual results: Errors "Resource ID out of range in GetResource: 1017928296 (max is 1048575)" are thrown in the console

Reproducible with: 2018.3.0b1, 2018.3.11f1, 2019.1.0b9, 2019.2.0a10
Not reproducible with: 2017.4.16f1, 2018.2.17f1, 2018.3.0a11