" |foo" generates an indent-pre with the PHP parser and not with Parsoid.
See https://en.wikipedia.org/wiki/User:Ssastry/Tests:tables#Indent-pre_and_.7C_chars
This is one of the sources of semantically-incorrect nowikis being seen here: http://localhost:8000/_rtselser/enwiki/Template_talk:Orphan?oldid=609365395
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=66489