There's a new patch for FIFA 18 out now. According to the patch notes, it appears that the game is finally addressing the kick off glitch that's been plaguing players for months.
Like the name implies, the glitch is performed at kick off where players pass the ball to their fullback, who then gets the ball down the wing, makes a cross, and scores a quick goal. It's not so much a "glitch" as it is an easily exploitable combo. But because of the way the players are set up during a kickoff, and the pretty fast pass speeds, it's pretty easily replicated. You can find plenty of videos and guides online both on how to perform the glitch, and ways to try and block it.
With the recent update however, FIFA 18 will fixing up this move. In the full patch notes, EA announced that after kick off, the defending team will be more compact and that attacking players will be less aggressive when they push up the field. Defensive players will also close the space between them and their attacking team to reduce any gaps.
This way, the attacking players won't be so far away to react to the kick off glitch, while the more compact formation will limit the attacking team's space. This should make things a bit easier when it comes to reacting to this particular kickoff maneuver.
Other updates in the patch include changes for FIFA's Ultimate Team mode such as doing away with indicators for Home or Away teams in the pre-match screens. Previews of your opponent's kits are also gone, instead replaced with your opponent team wearing your unselected Active Kit.