NG8109 errors are not showing up in inline templates

[jpike88]

🐞 bug report

Is this a regression?

don't think so

Description

An error that shows in the build log, doesn't show in the IDE. This issue is happening in VScode, and also in Zed which uses this library in a similar manner (nathansbradshaw/zed-angular#57).

Bug Type

• Angular Language Service VSCode extension
• Angular Language Service server

Reproduction

Steps to reproduce the behavior:
Use a signal against a button's [disabled] property, the IDE won't complain about the fact that it's an uninvoked function. Yet the compiler catches this during build.

Expected behavior

Errors in the compiler should always be mirrored in the language service.

Logs

No errors in logs, just an empty message from the langauge server when there should be an error present (nathansbradshaw/zed-angular#57 (comment)).

Screenshots

🌍 Your Environment

Angular Version:

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    


Angular CLI: 20.3.2
Node: 24.0.1
Package Manager: npm 11.5.2
OS: darwin arm64
    

Angular: 20.3.1
... common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                            Version
------------------------------------------
@angular-devkit/architect          0.2003.2
@angular-devkit/build-angular      20.3.2
@angular-devkit/core               20.3.2
@angular-devkit/schematics         20.3.2
@angular/cdk                       20.2.4
@angular/cli                       20.3.2
@angular/material                  20.2.4
@angular/material-moment-adapter   20.2.4
@schematics/angular                20.3.2
rxjs                               7.8.2
zone.js                            0.15.1

Extension Version:

20.2.0-rc.1

VSCode Version:

1.104.1

And also happening on Zed's current version. This issue appears to be relae

Operating System:

macOS Tahoe

Extension options: none