Printing bug in 4.5.x

After the recent update to 4.5, with both the original and the .1 release, I am getting incomplete printing. The images below show a screen shot of how the file appears when editing in Musescore Studio, the printed version is the output. The only recent change to the computer was the Musescore update, no changes in the printer driver. I have printed one other older file to test and it shows the same issue. Also, testing by exporting to a PDF file and then viewing it in Acrobat shows everything complete, but printing that file from Acrobat still shows missing lines, etc. A scan to PDF of the original sheet music to PDF and printing that from Acrobat is perfect, so it is ONLY the output from Musescore that is corrupted.

FYI, this is a copyrighted piece that I have entered in order to practice my choir part, so I prefer not to post the .mscz file, especially since other .mscz files exhibit the same behavior.