bug(tabs / mat-tab-group): Open dialog with component mat-tab-group and fast change mat-tab (click another mat-tab) and empty content
- 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
If I open a dialog in which I have a mat-tab-group component and quickly click on another tab (another mat-tab), the content of the newly opened tab is not rendered - it remains empty. It looks right in DOM.
There are several ways to quickly change a tab:
1. By touch
2. Click the mouse
3. By entering the click command in the console: document.evaluate('//html[1]/body[1]/div[1]/div[2]/div[1]/mat-dialog-container[1]/dialog-data-example-dialog[1]/div[1]/mat-tab-group[1]/mat-tab-header[1]/div[1]/div[1]/div[1]/div[2]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.click()
Fast click on tab after dialog open - bug

Slow click on tab after dialog open - correct

### Reproduction
Steps to reproduce:
1. https://stackblitz.com/edit/angular-k1g4u3-pmsayf
### Expected Behavior
Correctly loaded content of the newly selected tab
### Actual Behavior
The empty content of the newly selected tab
### Environment
- Angular: 14.0.0
- CDK/Material: 14.0.4
- Browser(s): Google Chrome 103.0.5060.66
- Operating System (e.g. Windows, macOS, Ubuntu): Windows
Contributor guide
Research direction
Start with the linked StackBlitz reproduction and exercise the mat-dialog-container containing mat-tab-group, including a rapid switch to another mat-tab. Trace the tab rendering behavior during dialog opening; done means the newly selected tab consistently displays its content for touch, mouse, and scripted clicks.
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
- 35/100