Caja - Mouse scrolls 'natural' on some files and normally on others

Hello,
I am using Trisquel 8.0, updates have been completed in add software (I am not certain if problem existed prior to last update).
Machine is hp Presario v3000.

In Caja file manager window, some directories scroll normally, where mouse wheel to scroll bar down raises window content upward. Other directories' content performs natural scroll where scroll bar down changes the files seemingly in place.

In dconf, every mouse reference seems to have the natural option unchecked.

How can I get all of the directories' folders and files to scroll normally?

Thanks.