无法显示连字符

字体设置没有问题，选择了JetbrainsMono字体，但终端上无法显示连字符。请问应该怎么打开连字符功能？

Start by reproducing the missing hyphen display in WindTerm with the JetBrains Mono font, recording the operating system and terminal settings involved. Trace the terminal's font-rendering or font-settings entry point and compare the result with a font that displays hyphens correctly. Done means the issue is reproduced and the relevant setting or rendering behavior is corrected and verified.

Written by the indexing model from the issue text.