Following T162823: Changing the alphabetical sorting (collation) @ ba.wikipedia.org (closed in June 2017), collation in the Bashkir Wikipedia's categories was corrected via a temporary workaround. Unfortunately, the change does not seem to have affected the sort order in Special pages that list pages, such as Special:AllPages and Special:PrefixIndex.
Apparently bawiki and the recently opened bawikibooks both suffer from the same problem.