Given:
There is a saved report I'm authorized to access and edit.

When:
I go into edit mode and change something

Then:
the evaluation fails with a 403.

Expected:
It should just succeed given the user is authorized to the definition selection.

Hint:
This bug is a side-effect of the owner being resolved to the fullname in the report response since OPT-3877 and the owner value being reflected bet to on demand evaluate calls with the full report definition.