So glad I found this thread, I'm experiencing the same issue after a fresh install of Windows 10 Pro and Office 365. Tiny cursor syndrome appears in Word and Outlook (the applications I use the most) and only when hovering over hyperlinks or italicised text.
Doesn't happen in Chrome or other applications.
Strangely enough, before this fresh install, the tiny cursor syndrome didn't appear on the exact same hardware.
Sorry you had to join us... But welcome, nonetheless.
What resolution, scaling, video card, mouse, etc., etc., etc. are you using? I'm still trying to see the patterns as to when this issue appears and when it doesn't...
I found a solution!
After contacting Windows support, and not getting much help (They said it was an Office problem, then Office Support said I contact their commercial centre, as I was using a commercial version of Office, etc. etc.) I contacted Corel Support.
They were really helpful, asking for detailed report files from my system, and offering solutions to try.
In the end the trick that worked was to delete all of the temporary files on my system, and reset the Corel Designer workspace. This worked for
Word and Outlook the as well the Corel program, so just deleting the temporary files should work for the two Office apps.
To do this, first restart your computer, and with no programs running, type %temp% in the windows search bar. This brings up one of your temporary files folders. Delete everything you can in this folder. You will not be able to delete everything, as Windows
uses some of the files. Just choose the 'Skip' option for these files. You may need to enter some of the subfolders to get as much as you can. Then type %tmp% in the search bar. This brings up the second temporary files folder, and repeat the process. Then
after a restart, see if the problem is fixed.