Switching language redirects to homepage

One-sentence description

Switching language redirects to homepage.

Current behaviour / Reproducing the bug

  1. Go to a page on the website. For example the boards page.
  2. Change the language by clicking the flag in the top right corner.
  3. Be redirected to the homepage (the language is changed correctly).

Expected behaviour

  1. Go to a page on the website. For example the boards page.
  2. Change the language by clicking the flag in the top right corner.
  3. Be redirected to the same page in the different language.
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