When exporting images from CorelDraw (images with vector and bitmp layers), even though the image may be perfectly aligned at "1920 x 1080" the jpeg export often times adds one pixel to the horizontal and vertical edge, making the export 1921 x 1081. Even when the adjustment is made in the export panel, it doesn't correct the white pixel issue. This can then be seen on social media or web, because of a thin white line due to the export (yet there is not white line in the program/design).
This happend when export a selection.
The same happend when creating an PDF form a selection. The file gets 0,4mm or so bigger.
When printing these files nested without space you see an small white line.