When a page is manually converted to use Flow, the page-tabs turns blue immediately even if the page is empty.
E.g. I used Special:EnableFlow to convert the empty/red talkpage of https://www.mediawiki.org/wiki/User:Quiddity_(WMF)/sandbox9
and immediately afterwards the link became blue.
I assume this is because of the history item, where it says I created an empty description: https://ca.wikipedia.org/wiki/Especial:P%C3%A0gines_noves?namespace=4&tagfilter=&username=
I semi-recall we had to implement this initial dummy-edit revision, but I don't recall why?
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Originally reported by @spage as:
> a problem with Flow-enabled talk pages is if there is no discussion, the [Discussion] tab is still blue, whereas on a regular talk page, a red [Discussion] tab tells me there has never been any discussion. The latter is a huge time-saver for people like me when editing less-trafficked pages. Is there a phab ticket to restore that?
The other contributing factor to this original report, is possibly the large number of pages on mediawiki that were //essentially//-empty, except for a single revision which tagged them to use LQT, and hence were converted to Flow.