No Backend Editor in Portfolio Page

[burger]

Hello. I don’t see the backend editor option in the portfolio pages even if I select the 100% custom. I assumed it might not be supported but the demo theme states:

CUSTOM PORTFOLIO PAGES
Create outstanding portfolio pages with our powerful portfolio element and the built-in drag & drop page builder. Get creative!

Custom 100% is pretty much un-usable without the backend editor option.

Thank you,
Burger

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