![Collapse not working in ng-bootstrap and angular 4 app for navbar breadcrumb button - Stack Overflow Collapse not working in ng-bootstrap and angular 4 app for navbar breadcrumb button - Stack Overflow](https://i.stack.imgur.com/SMXdt.png)
Collapse not working in ng-bootstrap and angular 4 app for navbar breadcrumb button - Stack Overflow
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Angular:Using ngx-bootstrap Collapse feature for multiple sections | by AngularEnthusiast | Geek Culture | Medium
![Angular:Using ngx-bootstrap Collapse feature for multiple sections | by AngularEnthusiast | Geek Culture | Medium Angular:Using ngx-bootstrap Collapse feature for multiple sections | by AngularEnthusiast | Geek Culture | Medium](https://miro.medium.com/max/1400/1*cC5xpXydA9Azhpp8Tj2D-Q.png)
Angular:Using ngx-bootstrap Collapse feature for multiple sections | by AngularEnthusiast | Geek Culture | Medium
![MatMenu] MatMenuTrigger aria-expanded changeDetection error · Issue #12798 · angular/components · GitHub MatMenu] MatMenuTrigger aria-expanded changeDetection error · Issue #12798 · angular/components · GitHub](https://user-images.githubusercontent.com/28670067/44508042-24b20680-a6ad-11e8-9358-3cf26420d49d.png)