I mentioned before, we are using version control.
We save our project as Xojo project, so that is not a problem for us, but might be for others.
What bothers me more is the fact that I can change source although the source is set to locked.
Saving gives an error message, the project can’t be saved and it’s gonna be a heck of a job to find out where the problem lies.
Locking the source in the Finder for me is a no go.
As Joost mentioned, when a new IDE is developed, it could be an idea to add feature request #45578.