Issue: During testing we discovered that the output of some printer drivers resulted in gaps that display at the block boundaries. Therefore, we did not enable this option by default. Since these gaps may affect the quality of your final output, we are giving you the ability to enable this option if or when you need it.
At this time, we do not have a workaround to remove these gaps. If you have both a postscript and a non-postscript version of your printer driver, we recommend you try both to see which version gives you better results.