The info popup appears as soon as you hover over a thumbnail, in either the library window or the filmstrip under the editing window.
This is very annoying if you don’t want it to appear.
There is an option on the Affichage menu to turn it off (also hotkey I), but that only makes it disappear until you hover over another thumbnail, when it reappears.
I would have expected the menu option to disable/enable this behaviour more permanently, allowing users the option to see the info on mouse over or not.
My feature request is to correct this behaviour, as described above.