Microsoft Simplified Chinese IME can't show preedit/candidate window in IntelliJ IDEA

Problem

In Windows 10, when using Microsoft Simplified Chinese IME (Input method engine) to type Chinese in IntelliJ IDEA, it fails to show a preedit/candidate window.

Cause

The problem appears to be related to the configuration or compatibility of the Microsoft Simplified Chinese IME method in the Windows 10 environment.

Resolution

• Update Windows to the latest version.
• Or open the Microsoft Simplified Chinese IME settings page and scroll to page bottom, enable previous Microsoft Simplified Chinese IME versions.