A buggy app accumulates gigabytes (literaly, i am not exagregating) of temp files there, but i cant visit the folder to delete them.
Google explains that "it's for you safety".
I have to call it with the strong word "idiotic".
There are apps now where storing files in a shared, accessible folder is a payed option.
Not only that is outrageous, I belive that violates the existing "right of access" laws like GDPR. I am condidering even submitting Subject Access Request to Google about my /Android/data/ subdirectories.
Settings > Apps > select the app > Storage and cache > Clear storage.