tight cave
As many others have already suggested in the EA Forum and various other places, the positioning of the fullbacks when in possession does not work as it should. I already posted it in the EA Forums 11 days ago, but to no success.
What does not work, exactly? It is the player roles, especially the positioning of the fullbacks when attacking. The only role, that alters their behavior in a meaningful way is the Falseback role, which makes them tuck into defensive midfield (as they should). For all other roles, they stay back most of the time, only advancing at rare occasions. They even do this on the attacking wingback role, which should actually be their most aggressive role. They should advance and provide attacking width to the team, which is especially needed in narrow formations (like the 4-1-2-1-2 (2)) or in systems with 5 defenders.
I also uploaded a video on YouTube, where I explain the issues in more detail. (How do I attach files (like screenshots) or links (like the mentioned video on YouTube) to a post like this? It seems, that every time I try it, the message gets deleted instantly, which makes it much more difficult to give meaningful feedback.)
As far as I know, these problems exist in every game mode and in both authentic and competitive gameplay mode. Actually, I am puzzled as to where these problems come from, as fullback roles worked fine in FC 25.
This issue already existed in early access and still persists to this day, weeks after launch. Although a title update mentioned that the problem was fixed, it is still there.