Command M no longer opens Media Encoder but makes you click around through PR's built in encoder
In all older versions, command M opened ME immediately. Now it opens the Export window, makes you click your way to ME, then slowly opens ME, then transfers data to ME, then you have to set up your files in ME (which you used to be able to automate in preferences, set destination etc - no longer works, check it) and then your presets don't carry over to the next encode, which they used to.
What a disaster! You realize that probably 90% of your users render using ME so they can continue editing, right? So why did you make it so clumsy and clunky in this new release? It's a step back of about 5 years.