You have missed the point of my post. It will become unstuck when a channel not in the 'favorites' list is selected.You can usually force your favourites list to 'stick' when you change channel by selecting from your favourites list, however if you just display the favourites list without selecting a new channel from it, then it won't become the default
Your post gave a possible reason for the problem, #3 gave a possible fix for the problemYou have missed the point of my post. It will become unstuck when a channel not in the 'favorites' list is selected.
Humax have a tradition of treating 'favourites' this way.