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docs(a11y): add note about cdkFocusInitial inside focus trap directive #19560

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Jun 9, 2020
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docs(a11y): add note about cdkFocusInitial inside focus trap directive #19560

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3 changes: 3 additions & 0 deletions src/cdk/a11y/a11y.md
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Expand Up @@ -84,6 +84,9 @@ For example:
<a mat-list-item routerLink cdkFocusRegionEnd>Focus region end</a>
```

**Note:** If you're using `cdkFocusInitial` together with the `CdkTrapFocus` directive, nothing
will happen unless you've enabled the `cdkTrapFocusAutoCapture` option as well. This is due to
`CdkTrapFocus` not capturing focus on initialization by default.

## InteractivityChecker
`InteractivityChecker` is used to check the interactivity of an element, capturing disabled,
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