Case Type Filter bug in Case Summary Report? Multiple case types reported
It looks like the * was added as part of this:
https://github.com/civicrm/civicrm-core/pull/7135

I can't immediately see from that why it was added to the case report, but seems to be related to the "not one of" filter.

I'm thinking all the * should be +, except then it would miss cases that might have somehow been created without the char(1) separators (originally case type was potentially going to be multi-valued, and char(1) is historically how civi separates values in multi-valued fields).

If you change the * to + does it work for you?

You can check your database to see how the case types are actually stored with something like

select case_type_id from civicrm_case where left(case_type_id,1) &lt;&gt; char(1);

If anything is listed then that means the + will miss some cases because you have some case types stored without the cntrl character separators.