Click and Drop not Printing all the Orders, Missing some

Anyone having any issues with this, since the new Print Preview Pane?

I have had 3 dropped completely off the printouts today and 6 yesterday, meaning a manual check, which takes ages.

The only hypothesis I can think of, is that there is a delay on loading and wait a few seconds after this new preview comes up, or it will print a shortage. I mean some were coming out with just part 2.