I created a new workspace. I added several files and folder to it. Now I can’t rearrange the files within the groups. Files in the Project Navigator are only showing up in strict alphabetical order in each group.
This problem is not showing up in other older workspaces.
The problem does show up in another new workspace I just created.
Does anyone know a setting in Xcode that could be causing this?
It could be a beta problem. I'm using Version 16.0 beta 4 (16A5211f). I have filed feedback with Apple.
Right click on the project folder and select "Convert to Group"
Xcode 16 by default now creates a "Folder" for your project content instead of a "Group". Folders do not allow rearrangement and this is the behavior you are seeing. There are various other details and differences between Folders and Groups in Xcode.
Read this entry, and the response from apple in the Developer Forum.
https://forums.developer.apple.com/forums/thread/759620
I myself am also disappointed at the new default behavior, but the "Change to Group" workaround is quite simple.