Hidden post: https://www.mediawiki.org/w/index.php?title=Talk:Sandbox&workflow=rxtndesxafkrxhcc
Hidden topic: https://www.mediawiki.org/w/index.php?title=Talk:Sandbox&workflow=rxtn34uxmojzi4xt
both are visible to logged-out users.
They should be hidden, per https://www.mediawiki.org/wiki/Extension:Flow/Moderation
Version: unspecified
Severity: major
Additionally, hidden posts are not collapsed for logged-in users. They should be per previous state, eg (until next week: https://en.wikipedia.org/w/index.php?title=Wikipedia_talk:Flow/Developer_test_page&workflow=rpi8y4hbixkou0hr
Hidden post content appearing is serious.
The hidden topic seems OK, the appearance is wrong. It used to appear quite differently with an icon. We need a design pass for how it should appear.
There's another issue we're researching: when you hide a topic or post, anon users see the old version of the Flow board. This seems to be a caching issue.
This is no longer happening. The linked trello card lists the series of patches that fixed this bug.