When the language drop down is enabled and a user changes the language, the whole page is reloaded to force a refresh of both server and JS loaded translations.

This is fine if you are on the empty/new paste view, but the reload looses the paste ID and key if you are looking at a paste. You then have to click on the back button to get back into the paste (which is now displayed with the selected UI language).

It would be better if changing the language on a paste would lead back to the same paste.