The following is about how to report bugs. It is not a bug report.
Should bugs in the HTML code of pages served from Stack Overflow / Stack Exchange sites be reported here on meta.stackexchange.com? (The FAQ implies it is OK to report bugs here, but doesn't explicitly say whether bugs are supposed to be reported here or somewhere else.)
If MSO is appropriate venue, what question-tags should be used for bug reports?
For example, if the bug concerns comments displaying properly on math.stackexchange.com and on english.stackexchange.com but improperly (with text overwriting causing illegibility) on stackoverflow.com and meta.stackoverflow.com, what tags would be appropriate?