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mat-expansion-panel "opens" with angular enter-leave animations, although current state is closed. · Issue #11765 · angular/components · GitHub
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angular - Is it possible to replace mat-expansion-panel-header with mat-form-field in mat-accord? - Stack Overflow
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angular - mat-expansion-panel, content doesnt recover his original height after closing a panel - Stack Overflow
How can I prevent a mat-expansion-panel from opening when clicked? · Issue #17651 · angular/components · GitHub
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