Suggested workaround for content-projection in control flow blocks does not work #59398
Description
Which @angular/* package(s) are the source of the bug?
compiler-cli, compiler
Is this a regression?
No
Description
When having multiple root elements in a control flow block, the compiler gives a friendly message suggesting to
Split the content of the @case block across multiple @case blocks such that each one only has a single projectable node at its root.
This does however not seem to work as suggested (or it works but the message is unclear). In particular, this does not seem to work for ng-content with specific selector targets.
See example of reproducing here
Please provide a link to a minimal reproduction of the bug
https://stackblitz.com/edit/stackblitz-starters-avyqjise?file=src%2Fmain.ts
Please provide the exception or error you saw
No exception.
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 18.0.0
Node: 20.14.0
Package Manager: yarn 3.4.1
OS: win32 x64
Angular: 18.2.1
... animations, cdk, common, compiler, compiler-cli, core, forms
... language-service, material, material-moment-adapter
... platform-browser, platform-browser-dynamic, router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1802.1
@angular-devkit/build-angular 18.2.1
@angular-devkit/core 18.2.1
@angular-devkit/schematics 18.2.1
@angular/cli 18.0.0
@schematics/angular 18.2.1
rxjs 7.8.1
typescript 5.5.4
webpack 5.91.0
zone.js 0.14.6
Anything else?
No response