Maybe not a real bug, but caused some confusion to a tired mind-
when I go here: http://www.ontobee.org/ontology/RO?iri=http://purl.obolibrary.org/obo/BFO_0000050
and I click on "'part of' in bfo.owl" under 'This ObjectProperty is originally
defined in'
then I get the 'Term Not Found' page
Maybe not a real bug, but caused some confusion to a tired mind-