the highlighted characters are displayed not as zh-CN style.
You can see that Some of the characters are displayed Right but Most of them are Wrong.
I can confirm that it is because Edge use Microsoft JhengHei instead of Microsoft Yahei most times.
This is my Language settings:
Edge Version 121.0.2277.71 (Official build) stable app, beta channel (64-bit)
Windows Version:
Edition Windows 11 Home
Version 23H2
Installed on 2024-01-24
OS build 22635.3066
Experience Windows Feature Experience Pack 1000.22685.1000.0
On other windows apps, the Simplified Chinese is displayed correctly:
