I also think this is really annoying.
I cannot work with EN fluently anymore.
As someone said before - I am also an EN user with premium for many years. But today I subscribed to the forums because the work with the actual PDF viewer is horrible.
My subscription is very fresh and runs until 02-2019. Today I downgraded to Evernote 6.7.5 because of this PDF issue and because the win app becomes slower and slower. If I click through the notes it's always a click - wait some seconds, next click - wait some seconds...
If this will not be solved in short time I think I will leave EN (but i think noone will care...)
PS: I downgraded to Evernote 6.7.5. Compared with the current version it's a great pleasure to work with this old version...