METRON-2191 [UI] Checkbox selector on Alerts UI is broken (tiborm via sardell) closes apache/metron#1468
diff --git a/metron-interface/metron-alerts/src/app/shared/context-menu/context-menu.component.ts b/metron-interface/metron-alerts/src/app/shared/context-menu/context-menu.component.ts
index 4ae0ad6..f559b2d 100644
--- a/metron-interface/metron-alerts/src/app/shared/context-menu/context-menu.component.ts
+++ b/metron-interface/metron-alerts/src/app/shared/context-menu/context-menu.component.ts
@@ -54,6 +54,10 @@
 
   private popper: Popper;
 
+  private excludedDomElements = [
+    'label', 'input', 'button'
+  ];
+
   constructor(
     private contextMenuSvc: ContextMenuService,
     private host: ElementRef
@@ -100,10 +104,14 @@
   }
 
   private toggle($event: MouseEvent) {
+    if (this.isElementExcluded($event)) {
+      return;
+    }
+
     $event.stopPropagation();
 
     if (!this.isEnabled) {
-      this.host.nativeElement.dispatchEvent(new Event(this.ctxMenuItems[0].event));
+      this.dispatchDefaultEvent($event);
       return;
     }
 
@@ -134,6 +142,14 @@
     );
   }
 
+  private dispatchDefaultEvent($event: MouseEvent) {
+    this.host.nativeElement.dispatchEvent(new Event(this.ctxMenuItems[0].event));
+  }
+
+  private isElementExcluded($event: MouseEvent) {
+    return this.excludedDomElements.find(element => element === ($event.target as HTMLElement).nodeName.toLowerCase());
+  }
+
   private getContextMenuOrigin($event: MouseEvent): HTMLElement {
     if (($event.currentTarget as HTMLElement).contains($event.target as Node)) {
       return $event.target as HTMLElement;