https://test.wikidata.org/wiki/Lexeme:L10 "Bug"
does not show in searches via wbsearchentities, even after a one hour allowance, via
https://test.wikidata.org/w/api.php?action=wbsearchentities&search=L10&format=json&language=en&uselang=en&type=lexeme
or
https://test.wikidata.org/w/api.php?action=wbsearchentities&search=Bug&format=json&language=en&uselang=en&type=lexeme
even though it seems to be indexed