• VS Code Version: Code - Insiders 1.45.0-insider (fd5d9a3, 2020-05-04T09:21:17.770Z)
• OS Version: macOS High Sierra 10.13.6

Steps to Reproduce:

1. Switch to a dark theme
2. Move mouse to the text area

Does this issue occur when all extensions are disabled?: Yes

This is a new issue caused by the removal of the special dark cursor in a915df1 to fix #94144. The default cursor is visible on macOS Catalina, but older versions of macOS don't have a text selection cursor that's visible on dark backgrounds. The old cursor can be fixed without removing it entirely.