Created attachment 125582 [details] gimp-2.2.10-htmlview.patch
Description of problem: gimp help system:web browser should call htmlview. it is configured by default to use mozilla. 1- Launch preferences 2- Click on "Help System" 3- Note the default web browser Version-Release number of selected component (if applicable): gimp-2.2.10-2.2. Fixed with the attached patch: gimp-2.2.10-htmlview.patch
I applied your patch in gimp-2.2.10-3.