The point is if i open views with exposed hierarchicak select filter, select box shows after 5 sec delay. It may disorient user.

Comments

Status:Active» Postponed (maintainer needs more info)

There is no configured delay while displaying the element.
How many terms your vocabulary has? Maybe the number is pretty large so the Javascript needs a while to create the list ...

Status:Postponed (maintainer needs more info)» Closed (cannot reproduce)

Feel free to re-open if there is still a problem.