Persistent Storage settings always opened after login
- the Persistent Storage was created after using the "Create Persistent Storage" setting in the Welcome Screen , and
- the Welcome Screen settings were made persistent
then the Persistent Storage is opened every time the user starts Tails, because the
PersistentStorageCreateSetting is stored inside the directory that's made persistent.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information