Adobe prints mirror image!

We have a few Adobe files which print in mirror image. Fun if you’re 8 years old and want to read in the mirror or by holding the paper backwards up to a light. We are printing to a networked HP 4050 PCL 6 printer. Printing to the same printer locally works, and printing to the networked printer one page at a time works. Same printer: not all of the linked text and images always print. This was an issue with the 5e driver of the printer, but was supposed to be fixed with PCL 6.