How to reproduce:
1. Open the attached project
2. Open scene1 scene
3. Edit BundleTestEditor script line 26 so it would Build asset bundle for your platform
4. Build Asset Bundle (Select Test object in hierarchy -> ad click on Build asset bundle button in inspector)
5. Play the scene and click Test button in inspector
6. Notice errors in console:
The referenced script on this Behaviour (Game Object '<null>') is missing!
Fixing reference to the runtime script in scene file!

Note: related to ScriptableObject in the asset bundle

Not reproducible: 5.3.3f1