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![Solved]-Open the first attached expansion panel in an Angular Material accordion-angular.js](https://streaming.humix.com/poster/HgVKcEGpvQbKlqLv/a572eef7d5395be3b634ad3d0874cc0931fb19a9ab3ba32a6aec8bb48b91f223_fSmZFu.jpg?w=432 "Solved]-Open the first attached expansion panel in an Angular Material accordion-angular.js")
Solved]-Open the first attached expansion panel in an Angular Material accordion-angular.js
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mat-expansion-panel keeps contents of collapsed panels in DOM · Issue #20680 · angular/components · GitHub
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Feature request - expansion panel option to only expand/collapse on ▽ or △ · Issue #8190 · angular/components · GitHub
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