Content elements cannot be added when page editing is disabled
When disabling page editing for editors with access module, new content elements
cannot be created.
This is due to the fact, that some JS AMD module (PageActions) is bound to page edit permissions, while it
meanwhile holds functionality that is independent from page edit permissions (like creating new content elements, show hidden elements and so on)
#2 Updated by Helmut Hummel 6 days ago
The AMD module is only added when page permissions are granted: https://github.com/TYPO3/TYPO3.CMS/blob/83a2eeb5320aacd4d947178abb0990177c34fa81/typo3/sysext/backend/Classes/View/PageLayoutView.php#L844-L857
However, the AMD module contains functionality, that is required even without page permissions: https://github.com/TYPO3/TYPO3.CMS/blob/83a2eeb5320aacd4d947178abb0990177c34fa81/typo3/sysext/backend/Resources/Private/TypeScript/PageActions.ts#L37-L39