Steps to replicate the issue (include links if applicable):

• Suppress the content of an old revision
• Diff the revision using a priviliged user
• The timestamp of the suppressed revision is styled as "double-striked" (by using mw-history-suppressed)
• Now visit the diff with an unpriviliged user
• The timestamp of the suppressed revision is only single-striked (mw-history-suppressed is missing)
• The timestamp is also linked to the oldid, but that is not helpful.
• Compare with action=history where the timestamp is double-striked and no link is provided, when the oldid is not viewable by the current user

What should have happened instead?:
Should look similiar to action=history