Grid and linked app in iframe

SC 9.4.032
A hateful behavior using recent browsers (Edge, Chrome, FireFox) on the situation of the grid with an edit application linked in iframe typically visible to the right of the grid.
After populating the grid, the detail of the first record does not appear. By clicking the appropriate button on the first record then everything works as well as choosing the next / previous page.
The interesting thing is that using an old browser (Explorer) everything works fine as before.
Any idea before i start inserting a JS in every ( a lot ) grid of the project?
Thank you.
Giorgio.