collect filter "history" is little helpful
The lighttable collect filter "history" (offering a filter for altered/unaltered images) is little helpful in my opinion. Images are only considered unaltered if there is no IOP applied at all. This also includes auto-applied IOPs like "flip", which is typically present even for JPEG images.
The responsible SQL query is at line 144 in common/collection.c
This issue affects both the 2.0.x stable branch as well as 2.2.x RCs and git master