[Koha] "Refine your search" in Koha 3.16

Hi, I just upgraded from Koha 3.14 to 3.16. I noticed a difference in the „Refine your search bar“, which kind of irritates me. Koha 3.14 used to list only the contents of the field 100 under „Authors“. Koha 3.16 apparently also lists the contents of 400 fields. In my case, this behavior is not desirable. Is there a way to revert to the behavior of Koha 3.14? Regards, Stephan