Flex designs pose unique challenges for most PCB tools because traditional object checks don’t account for Flex checks nuances. They present a new set of objects that are best accounted for during the design phase.
This forces designers to incorporate changes after the design data is off to manufacturing for build. The manufacturer must then perform the Flex-based checks on the design and relay the issues back to the designer. This leads to a frustrating loop that delays product releases and wastes money.