As member of the sysop user group on dewiki I can visit Special:RevisionDelete, when setting the url parameter to a log id it is possible to see the log entry and also hide parts of it.
This is happen because there seems no check for $wgLogRestrictions when showing the log entry for a restricted log. The log entry itself is not marked as revision deleted and therefore it is shown.
Working example (for viewing):
But I cannot visit https://de.wikipedia.org/wiki/Spezial:Logbuch/suppress where this should also be listed.
To get a log id of a suppressed log I have looked at the api (list=logevents) for a gap in the returned log_id and test it.