The form buttons (new) do not appear in the Grid

Grid as a detail of a form, the form buttons (new) do not appear in the Grid. This Grid is linked with another modal form.
Occurs as of 9.6.006
Someone else happens?

Curiously, it has to do with security, although it is disabled, if the user has access to the app, but not the appropriate CRUD privileges, the grid does not show the new button, but it does show the access pencil.
I test the apps with the whole environment, from Menu and with User Login.
Solved
Greetings