The officewiki LQT conversion, acting as "Flow talk page manager", put `{{LQT page converted to Flow}}` in some Flow board headers (//good//), e.g. [[https://office.wikimedia.org/w/index.php?title=User_talk:Jdavis&action=compare-header-revisions&header_newRevision=s6ul9wm0lecax4b4 | User_talk:jdavis]
But most got the expanded HTML of the template, as if it had been parsed (//bad//), e.g. [[https://office.wikimedia.org/w/index.php?title=User_talk:BDavis_%28WMF%29&action=compare-header-revisions&header_newRevision=s6ul9z5wrqqh94h7 | User_talk:BDavis (WMF)]].
I don't see a pattern to this, the conversions were about the same time.
One other page got a good first board header edit showing a template: [[ https://office.wikimedia.org/w/index.php?title=Village_pump&action=compare-header-revisions&header_newRevision=s6ul9prlxyjc8wmm | Village pump ]],
but mostly bad first board header edit showing HTML: [[ https://office.wikimedia.org/w/index.php?title=Talk:Administrative_Services_Suggestion_Box&action=compare-header-revisions&header_newRevision=s6ul9x3drffvwpxk | Talk:Administrative_Services_Suggestion_Box]], [[ https://office.wikimedia.org/w/index.php?title=Talk:Community_engagement&action=compare-header-revisions&header_newRevision=s6ul9vwutm8sw72p | Talk:Community engagement ]], [[ https://office.wikimedia.org/w/index.php?title=Talk:LiquidThreads&action=compare-header-revisions&header_newRevision=s6ul9t08b3k7rbkv | Talk:LiquidThreads]] [[ https://office.wikimedia.org/w/index.php?title=LQT_TestZero&action=compare-header-revisions&header_newRevision=s6ul9zk5ojjddy1o | LQT TestZero]], and [[ https://office.wikimedia.org/w/index.php?title=User_talk:Andrew_Garrett_%28WMF%29&action=compare-header-revisions&header_newRevision=s6ul9s95xw7njjjc | User_talk:Andrew Garrett (WMF) ]].