In certain categories one article becomes at top in block group for his letters
(for example, Baa Bbc Bcb -> Bbc Baa Bcb )
and the block letters becomes ahead of all the blocks of other letters
([A] Aaa Abc Acb [B] Baa Bbc Bcb [C] ... -> [B] Bbc Baa Bcb [A] Aaa Abc Acb [C] ... )
such wrong sequence is still displayed in the categories
example category 1:
https://ru.wikipedia.org/wiki/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%A3%D0%BC%D0%B5%D1%80%D1%88%D0%B8%D0%B5_11_%D1%8F%D0%BD%D0%B2%D0%B0%D1%80%D1%8F
http://i64.fastpic.ru/big/2015/0130/e6/57369451b7b321e293603601dfec2ee6.png
example category 2:
https://ru.wikipedia.org/wiki/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%A3%D0%BC%D0%B5%D1%80%D1%88%D0%B8%D0%B5_%D0%B2_2015_%D0%B3%D0%BE%D0%B4%D1%83
http://i64.fastpic.ru/big/2015/0130/e8/a5f3b5a08e187ca3682f1d67cb6e52e8.png
correct order of letters in the alphabet:
https://en.wikipedia.org/wiki/Russian_alphabet
I tried ?action=purge and Null edit for articles and categories - without result
I tried ?action=purge and Null edit for articles and categories - without result
I tried to change the template, which adds a category, to this category writing this category in wikitext and removing the template from the article - without result
I turning back template - without result
if delete a category from the wikitext - article disappears from the category
if then write a category in wikitext - аrticle will in normal right place in the category