Just feels a bit like the team splits into two parts into possession, attack and defence, think it's always been that way to some extent over the last few years but feels more obvious lately.
Back three are obviously always staying back, then typically had the midfield two very conservative in front of them with the wingbacks allowed to push up and form the attacking element along with the front three. If you went three in midfield Dendoncker would generally try to make runs forward to keep it as five making an attacking effort.
Today particularly felt like Dendoncker was asked to push more highly more often to make it more of a 6/4 split but in doing so it just vacated the midfield, Neves was in their along and his game isn't really about shuffling about knocking little give and goes to knit it all together, he's a fairly stationary player so that void in midfield becomes even more evident. Teams can just play him however suits them best, if you want to drop off you can leave him with that space and he'll not really hurt you directly without the spaces behind to hit long passes, if you want to press him then he'll just play safe passes with the back three or blindly hook things forward, he's not really someone who will take that extra touch under pressure and work his way out of a tight spot.
It needs more players from the attacking element to move towards the ball, come short and get on it, don't just all stand in a line 30-40 yards from the opposition goal and wait for someone to pick you out with a long ball. Vitinha looked like he might have it about him to try and mesh some bits together when he came on against West Ham, he was playing it short but then moving to receive the return, he was never static but by that point West Ham had it wrapped up so could drop off and watch him with little worry.