Hi @bcworkz ,
By the way, I forgot to say that I tested this problem with a new WP installation (official Docker image), with the Twenty Twenty Three template and without complementary plugin installed, with French set as default language.
As you say, it’s “probably a side effect of bad %27 decoding” and that’s what I noticed too. The JS call seems not to decode the apostrophe correctly before making the ajax call and therefore returns no result. As I said earlier, if I simulate the call with the correct encoding, the expected results are indeed returned.
You can see here https://ibb.co/P9KcWzz the wp_terms stored in my database with the encoding defined. Perhaps you can reproduce the problem I’m having with this data?
Thanks a lot