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fix(material/select): don't announce selected value multiple times

1

Screen readers announce the selected value multiple times. NVDA e.g. reads "Favorite food Pizza Pizza combobox Pizza collapsed". 1. First, the Screen Reader (SR) reads the value of the label...

mhaertwig

mat-datepicker: valueChange fires without blur event with `updateOn: 'blur'` set

6

#### Reproduction Use StackBlitz to reproduce your issue: https://stackblitz.com/edit/angular-6qr4ut?file=angular.json Steps to reproduce: 1. Type a valid date in the box starting with '0' (zero) 2. Wihtout blur start to delete...

lautarobock

bug(CdkDrag): Drag preview doesn't work well with sticky elements and scrolling

3

### 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...

br-kwon

### 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...

rothsandro

MdSelect and MdAutocomplete slow initial render w/ large number of options

23

For both `MdSelect` and `MdAutocomplete`, the initial render of the component (in the closed state) is very slow even though the panels are closed. We should ensure that any work...

jelbourn

mat-select seems to have serious performance issue

24

#### Bug, feature request, or proposal: With latest release, mat-form-field support was added for mat-select. But it introduced performance issues when we have multiple select lists (5-8). When we use...

naveedahmed1

bug: (Mat-Table) multiple header rows and sticky creates a gap between columns

1

### Description I created a table with multiple headers, after set some columns to sticky i had a gap between one of my columns, it happens if you use multiple...

Woogielicious

Mat-tree :Tree with nested nodes adding child doesnt update the view.

31

#### Bug: When using mat-nested-tree-node with a nested datasource if you add a child to an existing parent it does not update the view. #### What is the expected behavior?...

juggernut

bug(table): ngOnDestroy clears view before route animations finish

27

#### Reproduction https://angular-components-8057.stackblitz.io (updated to 9.2.4) Steps to reproduce: 1. Navigate to "Page" and the table view is destroyed immediately. #### Expected Behavior Table should remain in DOM until animations...

brandom

fix(cdk/overlay): scroll blocking sometimes clipping content

1

Fixes that under some circumstances the `cdk-global-scrollblock` class was causing the body content to be clipped in the background. Fixes #15051.

crisbeto