Steps to reproduce
- start an empty sandbox (https://en.wikipedia.org/wiki/User:John_Vandenberg/mtgg?veaction=edit)
- insert reference
- use an existing reference
Expected results:
'Use an existing reference' should be disabled, as there are none to select.
Version: unspecified
Severity: minor
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=50458