CorelDraw 2018 Links and Bookmarks / Internet issues

I'm using CorelDraw - currently 2018 in Windows 10 64bit, but I've been struggling to get Internet links to behave for a long time now.

I'm just going to publish some simple steps to reproduce some issues here for convenience and discussion, then I'll raise a support ticket...

  • Open CorelDraw and create a new, blank document.
  • Draw 12 boxes.
  • Open the "Links and Bookmarks" docker.
  • Click on each box in turn, click on "New Link" and enter URLs "01.com", "02.com", etc...
  • Now, export a PDF, open that PDF in your standard viewer and hover over the boxes to check the links - they are never all correct for me.
  • Also, if you return to CorelDraw, open the "Internet" docker, select a box and change the "Target" then the URL will spontaneously change.

This causes me a massive headache when I'm working on any leaflet with around 10 links or more.

I'd be interested to know if anybody else is being frustrated by this or has found a way around it.