Changes will no longer be recognized if you remove and re-add same component
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- TypeScript
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Description
### Command
serve
### 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
_No response_
### Description
Changes will no longer be recognized if you remove and re-add same component.
### Minimal Reproduction
Removing and re-adding the import of the component (`import { TestComponent } from ‘./test/test.component’`), the component in the `imports` array and in the template (``) leads to that no further changes to this component are recognized.

[Repro App V18](https://stackblitz.com/edit/stackblitz-starters-py5tnk?file=src%2Ftest%2Ftest.component.ts,src%2Fmain.ts)
[Problem also in V19](https://stackblitz.com/edit/stackblitz-starters-2h7zbv?file=src%2Ftest%2Ftest.component.ts,src%2Fmain.ts)
### Exception or Error
```text
```
### Your Environment
```text
**v18 Reproduction environment:**
Angular CLI: 18.2.12
Node: 18.20.3
Package Manager: npm 10.2.3
OS: linux x64
Angular: 18.2.12
... animations, build, cli, common, compiler, compiler-cli, core
... forms, platform-browser, router
Package Version
------------------------------------------------------
@angular-devkit/architect 0.1802.12
@angular-devkit/core 18.2.12 (cli-only)
@angular-devkit/schematics 18.2.12
@schematics/angular 18.2.12
rxjs 7.8.1
typescript 5.5.4
zone.js 0.14.10
**v19 Reproduction environment:**
Angular CLI: 19.0.0
Node: 18.20.3
Package Manager: npm 10.2.3
OS: linux x64
Angular: 19.0.0
... animations, build, cli, common, compiler, compiler-cli, core
... forms, platform-browser, router
Package Version
------------------------------------------------------
@angular-devkit/architect 0.1900.0
@angular-devkit/core 19.0.0
@angular-devkit/schematics 19.0.0
@schematics/angular 19.0.0
rxjs 7.8.1
typescript 5.6.3
zone.js 0.15.0
```
### Anything else relevant?
After clearing the Angular cache with `ng cache clean` and restarting the dev server with `ng serve` it works again.
So probably a caching bug.
Contributor guide
Research direction
Start with the linked StackBlitz reproductions and run the `serve` command using the remove-and-re-add sequence described in the issue. Compare behavior before and after `ng cache clean`; done means subsequent changes to the re-added component are recognized without clearing the Angular cache or restarting the dev server.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- angular, typescript
- Domain
- build-system, tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100