A family of Microsoft word processing software products for creating web, email, and print documents.
This quick fix worked for me...
Disabled "Display Pointer Trails" via Additional mouse settings - Mouse Properties - Pointer Options - Visibility. Now able to see black vertical cursor on white Word page.
Tried switching pointer trails back on, and white cursor problem reappears!
* Windows 11 Pro Insider Preview, Version 22H2, OS Build 25217.1010, Feature Experience Pack 1000.25217.1010.0
* Word version 2209 (Build 15629.20156 Click-to-Run) - Microsoft 365 Apps for business