Last Checked: 27th September, 2023
This issue currently affects feedback.minecraft.net and help.minecraft.net.
When trying to change the language on either of these websites, the language selector no longer appears, with the language button seemingly not functioning.
This means that you can no longer change the webpage to your local language, however this may be intended as the pages may now be localized to your native language.
Currently the feedback and help websites are not localized (except the contact us form).