Steps to reproduce:
- Enable the upcoming change “Enable simplified category creation”
- Create a category “Test category”
- Create a category “Test subcategory”
- Enable the “advanced settings” and go to the “Security” tab
- Add a group to the security permissions of the subcategory and remove the reply and create permission from “everyone”
- Save the changes and refresh to confirm they were applied
- Go back to the “General” tab and remove the category from the “Subcategory of” setting.
- Save your changes and check the security settings again
Expected result: The previously configured security settings remain unchanged, as they do when the “Enable simplified category creation” setting is disabled.
Actual result: The security settings are reset without warning, allowing everyone to create and reply to topics again.
Note: The same permission reset occurs when converting a category into a subcategory or when changing its parent category.