As part of the MinT for Wiki Readers, translation options (T359829) allow users to change the languages used to view a machine translation of the contents in the Translation view (T359801). However, these changes are not reflected in the URL. Thus, sharing the url, bookmarking, or refreshing can lead to unexpected results. That is, the previous languages showing instead of the ones most recently selected.
For example, accessing this machine translation from English to Korean I changed the target language to Greek. As a result, contents are displayed in greek but refreshing the page shows them again in Korean.