Hi, this is really directed anyone who works for Corel. If you look at this thread https://community.coreldraw.com/talk/coreldraw_graphics_suite_x8/f/832/t/54146 you will see that I'm still having trouble with this bug in your program and I would really like to get a response from you as to whether you are going to expect us to pay to upgrade to get a version of the program that works correctly. I have asked several times on that thread for a response and have not as yet had one. I hope you will be able to respond now.
Thank you very much,Phil
Phil make sure that after you set your dimensions to pixels that you type in the object to be exported as an image into the property bar and hit enter after each dimension.
Also, try to export your image without a reclangle around. Remember that the size information doesn't include the outline width