Sentences appear registered under language, but don't show up in "Recent Contributions"

[DJ-Saidez]

This is the list of sentences created in the process of adding language Gun to Tatoeba.
https://tatoeba.org/en/sentences_lists/show/171793
This process is shown in #3085.
When you go to the list, and each individual sentence page, it appears properly registered as a Gun sentence.

But when you go to Recent Contributions and search for sentences in Gun, no sentences come up.
https://tatoeba.org/en/contributions/latest/guw
The previously added sentences should be shown here, even if they were initially added under "Unknown language" before Gun was added.