Kate was the only application I could find in the list for this bug. All applications which require printing will be impacted by this bug.

KDE Neon 5.12.5, Qt version 5.10.0

Using Canon PIXMA MX922 AIO printer/scanner wifi network connection. Printer worked fine using default parameters although I found it necessary to always change from A4 to Letter page size. OPTION WOULD NOT SAVE

Trouble began when using the application gLabels in an attempt to print directly on CD/DVD media. Somehow I was able to set Configure printer/Printer Options for Media Size,  Media Type and Media Source for the CD/DVD disks. However, now I cannot set those back to print on paper.

As a workaround I can change the Printer Options, click Apply and then print on paper but clicking on OK the options will revert to CD/DVD.

Additional observations:

1. Opening the Printer Options I always have to expand the window horizontally to set the Media Size option. The Printer Options window size is NEVER remembered.

2. Opening the Print Queue window I always have to expand the window horizontally in order to see the printer job names and progress. The Printer Queue window size is NEVER remembered.