With only a few pluggins active, the side panel in Themler shows up, but the moment I active Ninja forms, and Yoast, the themler editor side panel disappears and pages become uneditable.
Different version of Ninja and Yoast have been tried and even Ninja support can not find a reason.
Also extensive testing with cache, disabling all features and turning cache off does not make a difference.
The problem appears the moment I try to active standard popular pluggins.
Any advice would be welcome.
Screenshot of problem