As I understand it, when someone internationalizes a template here using Project:Translation machinery, every page using it displays garbled <translate>...</translate> tags until it is updated to invoke {{TNT|Template name}}.
This happened with {{MW version}}, it happened with {{Soft redirect}} (until @Krenair reverted it), etc.
Although the translation work that @Shirayuki and others do is immensely valuable, I think it's unfair to other mw.org users when it breaks pages that aren't internationalized. Surely there's a way that a template can do the right thing and not f*** up untranslated pages? If not, then we need a process for "Templates that are going to be translated", "Pages that need update for i18nized templates", [[Category:Templates that only work on i18n pages]], and maybe a bot to do the work.
Thanks for everyone's hard work, I appreciate it.