Thank you for working with meta bugs, but unfortunately the DOCX
limitation meta bug (tdf#88173) isnt to be used to tag every single bug
report that relates to the DOCX format (we use the keyword 'filter:docx'
to tag such bug reports), but is to list bugs related to DOCX features
that LibreOffice hasnt implemented and cant be implement, as mentioned
by qubit in comment 3 of the bug.
On a separate note, if you wish to do alot of such meta bug changes, i'd
suggest you ask QA admin members on IRC to provide you ninja edit
status, so that emails dont get sent out to every user subscribed to the
meta bug, as my inbox has been flooded with hundreds of such changes to
the DOCX limitation meta bug.