Non-english characters are converted into html entities in browser view-source for Angular v16 Universal

[sahilpurav]

Which @angular/* package(s) are the source of the bug?

Don't known / other

Is this a regression?

No

Description

In Angular 15, if we have any non-english characters (like Japanese or Chinese), in the view source, it was printing the exact characters. After I upgraded my application in Angular 16, I noticed that, these characters are now converted into html entities.

It shows properly on the front-end but I'm not sure if this is the right implementation for sites with non-english languages as the whole point of having SSR is fast TTFB and friendly SEO.

I'm attaching the screenshot of both Angular v15 and v16 version.

Angular v15:

Angular v16:

PS: This is not happening only for title tags. It happens even in body. I initially thought, it's an error in my code but then I took a fresh install of Angular v16 with SSR and change a text to some Japanese or Chinese character and I found the same issue.

Please provide a link to a minimal reproduction of the bug

https://codesandbox.io/p/sandbox/billowing-https-qfynnv

Please provide the exception or error you saw

No response

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 16.1.1
Node: 18.16.0
Package Manager: npm 9.5.1
OS: darwin x64

Angular: 16.1.2
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, platform-server
... router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1601.1
@angular-devkit/build-angular   16.1.1
@angular-devkit/core            16.1.1
@angular-devkit/schematics      16.1.1
@angular/cli                    16.1.1
@nguniversal/builders           16.1.0
@nguniversal/express-engine     16.1.0
@schematics/angular             16.1.1
rxjs                            7.8.1
typescript                      5.1.3

Anything else?

I have created a codesandbox URL for you to reproduce this issue. Head on to this URL and do a view source. Try to search anything with the Japanese character. You won't find anything as these characters are converted in $#codes;

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