On a normal talk page, if I click on the "Permanent link" on the sidebar, I'll get a link pointing to a page where other users can read a discussion as it was at a given moment. However, on Flow talk pages, if I click on the "Permalink" (is this a word? (yes)) which appears in the menu for each comment, I only get a link to the latest version of the discussion. E.g.:

1. If a user edits a comment in the discussion, the new version will appear when one follows the permanent link to the older version - this is wrong!
2. If another user replies to the topic, the new reply will appear for someone following the permanent link to the old version. This is also wrong!

On normal talk pages, if I go to the history and click on the timestamp for a given comment, I'll get a link pointing to a page where other users can read the discussion as it was at that moment. However, on Flow histories, I'll get a link to a single comment, instead of the whole discussion at that time.

See also:

• T2851: when viewing an old version of a page, use old version of templates
• T110525: Have a global diff when some people add answers to a Topic