I have the same problem, when loading an action with everything required to execute a stored procedure, obtaining the parameters from the suggestions made by the "Execute stored procedure (V2)" control, where it is guaranteed that there is a connection to the database. data, which is reading the procedures contained in the database, completing the required parameters; In the end, the dynamic content associated with the action is not being loaded.
I test by loading all the records of a table and that does generate the dynamic content, but the call to the stored procedure does not create the calls to the fields dynamically.