I am not an expert with Weglot unfortunately, but if you reach out to them and if they give some feedback that something need to be changed in Webflow, let me know and I am happy to take a look further.
Hi @olivkadesign Weglot Support here.
The behavior you should experience could come from the translation.
Could you check further into your Translation List if a translation has been created for the language codes from the language switcher?
By default they should be excluded from the translation but it could happen that with a custom switcher, the language codes are translated by Weglot.
In this case, editing the translation could do the trick.
Otherwise, don’t hesitate to contact us at support@weglot.com and we’ll be able to help you further with this demand.
Have a wonderful day