No permission to manage files

In Android11,Added permission:
android.permission.MANAGE_EXTERNAL_STORAGE
It allows kwgt to access the internal storage directory.However, the declaration of applying for this right has been deleted in the new version of kwgt.This used to exist.
It makes it impossible to use “$wg(file:///storage/emulated/0/test.txt,txt)$”,including other file operations.
I tried to give this permission, and kwgt can access the internal storage. However, it prevented you from entering the advanced editor.

It could be related to the change in storage access policy. Check this post by Frank.