Hey, this isn’t a Windows 10 bug. It’s an intentional change starting in Cursor 2.1. Editor action icons, including the Preview/Markdown toggle, are hidden by default. On your Windows 11 machine, they were probably re-enabled at some point.
To bring the toggle back:
- Click the three dots … in the editor title bar
- Select Configure Icon Visibility
- Turn on the icons you need
More details here: Editor actions icons disappeared in 2.1.0 version - #2 by deanrie