Does not play nice with QTranslate Slug it seems

See https://wordpress.org/support/topic/does-this-work-with-mqtransalte?replies=3#post-6558370. QTranlate Slug does work with mqtranslate, but this language switcher did not pick up on the updated slugs so loaded the old slug. ideas?

https://wordpress.org/plugins/language-code-selector-mqtranslate/