Invisible text in toolbar after upgrade

I have just upgraded my laptop to windows 10 and have found an issue with my CorelDraw x4. The toolbar at the top of the page has invisible text. You can see the text when you hover over it but otherwise its invisible. We have checked  all pc settings and no other software is affected other than CorelDraw and CorelPhoto paint. Can anyone offer a fix please? Thank you

  • Windows 10 is not supported for X4. The first version to fix this issue with Windows 10 was X6 with all patches applied.

    • Windows' high-contrast themes will reveal the toolbar text in X4. However, I haven't tried to isolate the particular Registry key that iterates toolbar text color, and it's awkward to change themes just to work in X4. A project for a rainy day...