This is a UI bug and will be corrected.
Correct way for match_type for multiple fields is like, WILDCARD(A), WILDCARD(B) as described in spec.
A comma and space-delimited list of < matchtype >(< fieldname >)
specification to allow for non-exact matching
The available matchtype values are WILDCARD, CIDR, and EXACT. EXACT is
the default and does not need to be specified. Only fields that should
use WILDCARD or CIDR matching should be specified in this list