This loaded easily enough, but the new layout is rather confusing, when you don't have enough time to play with it before needing to get on with the work.
Eventually I found the settings I wanted and then it worked well.
I was disappointed that certain bits haven't improved, especially the automatic variable formatting when you go through a pdf on screen. I set it for 100% display (A4 layout) and it always tends to expand this to something like 180% of A4, sometimes after a few pages which come out OK. It's most disconcerting.
I believe the setting can be locked, but only if you set the security protection (I did this some years ago for a while) and we have found that some users have systems which block secured pdfs as a risk, so I had to abandon the idea.