angular / angular/components

bug(RadioButton): Radio button group adds scroll when used in MatTab component

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#29,135 3 comments 0 reactions 0 assignees View on GitHub
area: material/radio P4
Dominant language
TypeScript
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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

When the `mat-radio-group` component is placed inside the `mat-tab` component it adds unnecessary scroll when any other content doesn't

But can be fixed by using `mat-tab-group dynamicHeight`

### Reproduction

StackBlitz link: [Link](https://stackblitz.com/edit/d9acy1?file=src%2Fexample%2Ftab-group-animations-example.html)
Steps to reproduce:
1. Use `mat-tab-group` and `mat-tab`
2. Use `mat-radion-group` and `mat-radio-button` and place inside the `mat-tab`
3. Notice scroll bar
4. Add `dynamicHeight` attribute to the `mat-tab-group`
5. Notice the scroll bar is gone

### Expected Behavior

The scroll bar should not appear when mat-radio-group is placed inside the mat-tab

### Actual Behavior

mat-radio-button-group adds scroll when used in mat-tab component

### Environment

- Angular: "@angular/core": "^17.3.0",
- CDK/Material: "@angular/material": "18.0.0",
- Browser(s): Chrome
- Operating System: macOS

Contributor guide

Open the contributing guide

Research direction

Start with the linked StackBlitz reproduction using mat-tab-group, mat-tab, mat-radio-group, and mat-radio-button, first without dynamicHeight and then with it. Trace the tab and radio layout behavior, then add a regression test covering the reported combination. Done means the unnecessary scrollbar no longer appears without requiring dynamicHeight.

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
42/100

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