Currently running 15.5 Beta 3 on a Mac Studio M4. I am unable to read/write to my Home folder from most of my applications. I receive an error basically saying I do not have access rights to the file/folder. If I go to the file directly and open it, it works. I have repaired disk permissions, checked the Sharing & Permissions settings via Get Info, and finally called Apple. Of course, since I am running the beta, the support was quite limited. I will add that I am also unable to open .dmgs that have been downloaded to my Downloads folder. I receive the "The disk image couldn’t be opened. The operation couldn’t be completed. Operation not permitted" error. If I copy the .dmg to another drive, I can open it from there.