One side-effect of this new taskbar feel/look is that it dynamically arranges the icons based on how many it decides can fit. So if you run a DOS window with a looping command that runs every 1 min (for loop with sleep 60), your application icons are re-arranging every minute. That's because MS DOS window changes the title depending on what command is currently being run in that DOS window. So you don't even touch your keyboard but the icons in your taskbar are changing, what a circuss show.
On top of that, there is an arbitrary space on the right-hand side of the infamous 3 dots, completely wasted.
C'mon Microsoft, you can do better than that.