When we block this directory, it leads to website showing as Mobile Unfriendly by Google Tool, that.
Lots of people are facing this problem, but with advent of Mobile First indexing, this issue needs to be addressed by Enfold team, because we cannot just block it using robots.txt, as it will make the website look mobile unfriendly by Google Mobile tool.
https://kriesi.at/support/topic/issue-with-indexing-of-theme-on-google/
https://kriesi.at/support/topic/google-indexing-the-enfold-theme-folders/
It is not actually the issue with SEO plugin. I admire Enfold theme due to ease of use and customization, but these framework pages getting indexed is certainly an issue with it. So, no SEO plugin will address there. It is an issue specific to the Enfold theme.
Portfolio items has nothing to do with the Framework pages that got indexed, probably you are not the right person to answer this. Can you pass it on to another more experienced and technically sound moderator.