Thread:Support/No localized message shown/reply

https://ro.wikipedia.org/w/index.php?title=MediaWiki:Categorytree-num-empty/ro is showing the correct contents, so from an L10n perspective, everything is okay. When I go to https://ro.wikipedia.org/wiki/Categorie:Categorii_de_redirec%C8%9Bionare?uselang=nl, I'm shown "leeg", which is the correct Dutch translation. On https://ro.wikipedia.org/wiki/Categorie:Categorii_de_redirec%C8%9Bionare?uselang=ro I see "empty". I do see that there has been some experimenting, because https://ro.wikipedia.org/w/index.php?title=MediaWiki:Categorytree-num-empty was recently deleted. I don't know what role this plays. Currently the latter page *does* display expected content ("fără conținut").

I do not understand why that is happening, but please report this as a Wikimedia specific issue in https://bugzilla.wikimedia.org.