fix(popover): no focus on button on Mac OS #1795 (#2031)

fixes #1795

Author: gilsdav

src/popover/popover.directive.ts

@@ -67,6 +67,16 @@ export class PopoverDirective implements OnInit, OnDestroy {
     Object.assign(this, _config);
     this.onShown = this._popover.onShown;
     this.onHidden = this._popover.onHidden;
+
+    // fix: no focus on button on Mac OS #1795
+    _elementRef.nativeElement.addEventListener('click', function() {
+      try {
+         _elementRef.nativeElement.focus();
+      } catch(err) {
+        return;
+      }
+    });
+
   }
 
   /**