Permission denied on function after schema copy

I had one schema 'public' and simple function in the schema named 'isvalidoption'. What was done: - backup schema using pg_dump; - rename schema to 'development'; - create new schema 'public'; - restore it from backup using pg_restore. The problem: - when I select from any table omitting schema prefix like 'SELECT * FROM mytable;' it's OK - when I run function with schema prefix like 'SELECT public.isvalidoption();' or 'SELECT development.isvalidoption()' it's OK; - when I run function omitting schema prefix like 'SELECT isvalidoption();' **I get ERROR: permission denied for function isvalidoption** User has USAGE on both schemas and EXECUTE on function in both schemas also he is owner of the function in both schemas. PostgreSQL version is 9.6.1. 'SELECT current_user;' shows correct user. 'SHOW search_path;' shows '"$user", public'. Any ideas?