Actually it’s a similar issue as in my very first post on the top of this topic at the 21/02/2016 which you solved afterwards.
I choose “Block menu items” > “Not Selected”:
-> If I’m deselecting edit_posts (edit.php)…
-> …then got to pages -> click on trash -> I get forwarded to the dashboard.
-> On another site, I have the theme “Stockholm” installed which provides several modules.
-> If I deselect the module Portfolio-Create (post-new.php?post_type=portfolio_page) or if I deselect the module Testimonials-Create (post-new.php?post_type=testimonials) or any other create module item (post-new.php?post_type=xyz)…
-> …then go to pages -> click on new page -> I get forwarded to the dashboard.