![angular - How do I set an initially opened expansion panel to be closed by default? - Stack Overflow angular - How do I set an initially opened expansion panel to be closed by default? - Stack Overflow](https://i.stack.imgur.com/zpuYM.gif)
angular - How do I set an initially opened expansion panel to be closed by default? - Stack Overflow
![angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow](https://i.stack.imgur.com/BiItv.png)
angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow
![mat-expansion-panel example (Self aware panel) on material.angular.io doesn't work · Issue #8567 · angular/components · GitHub mat-expansion-panel example (Self aware panel) on material.angular.io doesn't work · Issue #8567 · angular/components · GitHub](https://user-images.githubusercontent.com/6603745/33079476-5a994a1c-cede-11e7-8f7b-5b68c8ef4236.png)
mat-expansion-panel example (Self aware panel) on material.angular.io doesn't work · Issue #8567 · angular/components · GitHub
mat-expansion-panel opens all panels in the mat-accordian when used with in mat-menu · Issue #10046 · angular/components · GitHub
![angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow](https://i.stack.imgur.com/Y8Pe2.png)
angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow
![Angular material expansion panel inside accordion - dragged item looks like two items being dragged · Issue #102 · SortableJS/ngx-sortablejs · GitHub Angular material expansion panel inside accordion - dragged item looks like two items being dragged · Issue #102 · SortableJS/ngx-sortablejs · GitHub](https://user-images.githubusercontent.com/520883/39179857-502a961a-47ad-11e8-8d5b-3f47d32c64a0.png)
Angular material expansion panel inside accordion - dragged item looks like two items being dragged · Issue #102 · SortableJS/ngx-sortablejs · GitHub
![mat-expansion-panel "opens" with angular enter-leave animations, although current state is closed. · Issue #11765 · angular/components · GitHub mat-expansion-panel "opens" with angular enter-leave animations, although current state is closed. · Issue #11765 · angular/components · GitHub](https://user-images.githubusercontent.com/3656278/53063817-619f6000-347a-11e9-9e88-19d896beeb16.png)
mat-expansion-panel "opens" with angular enter-leave animations, although current state is closed. · Issue #11765 · angular/components · GitHub
![Accessibility: Expansion-panel header is not marked as focused when tabbing. · Issue #14569 · angular/components · GitHub Accessibility: Expansion-panel header is not marked as focused when tabbing. · Issue #14569 · angular/components · GitHub](https://user-images.githubusercontent.com/604690/50208049-770be700-0370-11e9-91bf-47655e30350d.png)