Skills install by name, so the installed marker matched any same-named
feed row. That identity only holds for first-party namespaces; community
feeds carry distinct skills reusing popular names (docx, xlsx, pdf), and
every lookalike rendered with the installed checkmark and an ON/disabled
switch, and passed the Installed filter. Such a row is neither the
installed skill nor installable beside it, so the browser now drops it
while official rows keep the existing name match.
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