Hello, 

I face some interesting problem

this is what I have done.

1. Duplicated purchase user access group under the name: only own documents

2. under recorded rule for purchase order added rule: [('create_uid', '!=', user.id ),('create_uid','=',False)]

3. I changed user1 group from user->user:only own documents and I got expected result, user1 sees only his only docs.

4. I changed user1 group back : user: only own documents -> user, it still shows only his own docs.

5. i changed to manager, again nothing was changed

6. I deleted group user:only own documents, again nothing was changed.

So, any idea what happened, where I have to look for solution?

Regards, 
Noro