Searching for E10 (https://www.wikidata.org/w/index.php?search=E10&ns640=1) does not find any results. It should find https://www.wikidata.org/wiki/EntitySchema:E10
Searching for human (https://www.wikidata.org/w/index.php?search=human&ns640=1) does not find any results. It should find https://www.wikidata.org/wiki/EntitySchema:E10
Searching for intitle:/E/ (https://www.wikidata.org/w/index.php?search=intitle%3A%2FE%2F&ns640=1) only finds two results, E123 and E431. It should find all entity schemas (about 400 results), because all entity schemas have "E" in the title.