On Wiktionary, a message asks you to answer a quick survey to help improving Wikipedia. Clicking the link leads to Qualtrics survey about Wikipedia. Is it expected behavior? That looks strange.
After you have clicked “Participate to survey” button, the message on Wiktionary says “we will use your feedback to improve Wiktionary”, so this is at least inconsistent.
I copy messages in French, because uselang parameter doesn’t work for these messages:
Répondez à un rapide sondage et aidez nous à améliorer Wikipédia.
Merci pour ce retour ! Nous l’utiliserons pour rendre Wiktionnaire encore meilleur !