![angular5 - Angular 5: clicked button that triggers a dialog becomes highlighted after the dialog is closed - Stack Overflow angular5 - Angular 5: clicked button that triggers a dialog becomes highlighted after the dialog is closed - Stack Overflow](https://i.stack.imgur.com/FA3Fa.gif)
angular5 - Angular 5: clicked button that triggers a dialog becomes highlighted after the dialog is closed - Stack Overflow
bug(mat-button): Focus is imperceptible on mat-button in High Contrast Mode / white-on-black · Issue #21363 · angular/components · GitHub
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