this edit is made by a restricted VisualEiditor interface (Add-Link-Structured-Task) which only adds links so this is probably a Parsoid roundtrip issue. The old text is
<onlyinclude>{| ...
...
|}</onlyinclude>the new text is
<onlyinclude>
{| ...
...
|}
</onlyinclude>(the link edit was to a completely different part of the page).
