angular / angular/components

bug(form-field): form field prefix in overlay

Open
#29,064 2 comments 6 reactions 0 assignees View on GitHub
area: material/form-field P4
Dominant language
TypeScript
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Merged PRs (30d)
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Description

### 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

The issue is about the missing padding for the label when using a form field inside an overlay with ng-content. It can be easily reproduced in stackblitz, I will provide a link where it can be seen how is misbehaving. Without ng-content, everything works fine.

### Reproduction

StackBlitz link:
Steps to reproduce:
1. click on open

https://stackblitz.com/edit/ipwssz-9pucs5?file=src%2Fexample%2Fcdk-overlay-basic-example.html

### Expected Behavior

The label should be positioned after the prefix.

### Actual Behavior

The label transition is not working properly.

### Environment

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

Angular CLI: 17.3.0
Node: 18.18.0
Package Manager: yarn 1.22.19
OS: linux x64

Angular: 17.3.0
... animations, cli, common, compiler, compiler-cli, core, forms
... localize, platform-browser, platform-browser-dynamic, router

Package Version
------------------------------------------------------------
@angular-devkit/architect 0.1703.0
@angular-devkit/build-angular 17.3.0
@angular-devkit/core 17.3.0
@angular-devkit/schematics 17.3.0
@angular/cdk 17.3.6
@angular/material 17.3.6
@angular/material-experimental 17.3.6
@angular/material-moment-adapter 17.3.6
@schematics/angular 17.3.0
rxjs 7.4.0
typescript 5.4.2
zone.js 0.14.0

Contributor guide

Open the contributing guide

Research direction

Start with the StackBlitz reproduction in src/example/cdk-overlay-basic-example.html and follow the form-field prefix case inside the overlay using ng-content. Reproduce the issue by clicking Open, then verify that the label is positioned after the prefix and its transition works correctly.

Written by the indexing model from the issue text.

Assessment

Tech stack
angular, typescript
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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