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

core

Is this a regression?

Yes

Description

We log errors our users are getting. Since a few weeks (+- around the time of upgrading to ng18) a new error has popped up.
It happens approximately 10 times per day on a userbase of +-8000 users per day.

We cannot reproduce it ourselves, but it seems to be a combination of lazy loading/defer loading + loss of internet connection.

Error: "ASSERTION ERROR: Must never be called in production mode"
stack trace: vu@https://www.acro-companion.com/chunk-HPX2AJVJ.js:4:392dv@https://www.acro-companion.com/chunk-HPX2AJVJ.js:7:40140@https://www.acro-companion.com/chunk-HPX2AJVJ.js:7:90570onInvoke@https://www.acro-companion.com/chunk-HPX2AJVJ.js:7:64426run@https://www.acro-companion.com/polyfills-XYXPKSL4.js:1:1733@https://www.acro-companion.com/polyfills-XYXPKSL4.js:2:556onInvokeTask@https://www.acro-companion.com/chunk-HPX2AJVJ.js:7:64246runTask@https://www.acro-companion.com/polyfills-XYXPKSL4.js:1:2348x@https://www.acro-companion.com/polyfills-XYXPKSL4.js:1:9079promiseReactionJob@[native code]

interesting is that +-95% is on iPhone, so possibly something to do with loading of javascript during minimized?

If I search through node modules this error seems to originate from angular core:

our configuration for production is nothing special:

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

No response

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

Angular CLI: 18.0.4
Node: 20.13.1
Package Manager: npm 10.6.0
OS: win32 x64

Angular: 18.0.3
... animations, cdk, common, compiler, compiler-cli, core, forms
... google-maps, language-service, material
... material-date-fns-adapter, platform-browser
... platform-browser-dynamic, router, service-worker
... youtube-player

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1800.4
@angular-devkit/build-angular   18.0.4
@angular-devkit/core            18.0.4
@angular-devkit/schematics      18.0.4
@angular/cli                    18.0.4
@angular/fire                   18.0.1
@schematics/angular             18.0.4
rxjs                            7.8.1
typescript                      5.4.5
zone.js                         0.14.7

Anything else?

No response