Steps to replicate the issue (include links if applicable):
Compare
https://dag.wikipedia.org/wiki/Shinshimi?useparsoid=1#Kundivihira
and
https://dag.wikipedia.org/wiki/Shinshimi?useparsoid=0#Kundivihira
What happens?:
On Parsoid, the error is repeated once for every repeated reference. It is not the case on the legacy parser.
What should have happened instead?:
Parsoid should report the error only once.