I don’t actually know what causes the RW resource issues, but I do see them an awful lot.
My go-to tip for any problems having to do with linking resources is to store the resources inside the project.
macOS grants more privileges to things stored inside of a file bundle. This may not solve all problems, but it will probably solve some.
If you’re interested in trying it, this is how you do it: choose “Copy into the document” in the Advanced settings.
