Revisions being swallowed in Wiki markup

This was reported for JIRA OnDemand:

I suspect something's broken in JIRA due to removing Subversion support recently. In the following link, the comment used to read something like:
"r93, r94, and r95 change too many things for them to be merged easily. I doubt they can be merged."
and now it only reads:
", , and change too many things for them to be merged easily. I doubt they can be merged."