Compact language links breaks with JavaScript error in https://es.wikipedia.org/wiki/Luna
This is similar to nds-NL issue fixed earlier T143527: nds-nl is not consistently lowercased in compact language links, but this time failure to normalize for language code redirects consistently.
![[[w:es:Luna]] interwikis.png (156×266 px, 7 KB)](https://phab.wmfusercontent.org/file/data/rjxde7dpwnldlk5on3xx/PHID-FILE-74pensext2uku6eybvam/preview-%5B%5Bw%3Aes%3ALuna%5D%5D_interwikis.png)