Angular 19 SSR: App breaks when receiving \r\n in API response with net::ERR_CONTENT_LENGTH_MISMATCH

[AnatoliiMazur]

Command

version

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

18.2.12

Description

After building the project and starting the server, navigating to a page that contains \r\n in the API response and reloading the page causes Angular to stop working. The browser console shows the following error:
GET http://localhost:4000/about net::ERR_CONTENT_LENGTH_MISMATCH 200 (OK)

Minimal Reproduction

https://github.com/AnatoliiMazur/angular-19-bug

1. Build the project and start the server
2. Navigate to the page http://localhost:4000/about
3. Reload the page

Exception or Error

The page should render correctly, and Angular should work without errors.

Your Environment

Angular CLI: 19.1.5
Node: 20.11.1
Package Manager: npm 10.2.4
OS: darwin arm64

Angular: 
... 

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.1901.5 (cli-only)
@angular-devkit/core         19.1.5 (cli-only)
@angular-devkit/schematics   19.1.5 (cli-only)
@schematics/angular          19.1.5 (cli-only)

Anything else relevant?

A minimal reproduction repository is available here.

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