Small column widths on column headers

This is one of the widespread issues of MediaWiki we've not find any idea of solution for; where should it be tracked? We have issues even in critical pieces of MediaWiki like the Upload wizard...

P.s.: I've checked the Italian translation and it's even correct, kudos to the translator (lower quality translators would have used the more pompous "Utilizzazioni" which is 4 times longer and less correct).

Create bugzilla issues and add keywords "design" and "i18n" (because it's a design issue that impacts i18n).

Bugs 39266 and 39267 started.

Thanks. I made some tweaks. You used keywords incorrectly ;).