Not sure if this should just be a normal core tracker, logged in today and bits of my profile are randomly in turkish:

https://moodle.org/plugins/auth_saml2/versions

https://moodle.org/user/edit.php?id=6290&course=1

My language preferences are still correct as en. I tried swapping them to something else to see if I could reset it without luck.

In incognito and for other people it seems fine.