Merge branch 'gitlab-org/gitlab-ce#41738' into 'master'

Fix if-check

See merge request gitlab-org/gitlab-ce!20640

app/assets/javascripts/boards/components/board_list.vue

@@ -203,7 +203,7 @@ export default {
       this.showIssueForm = !this.showIssueForm;
     },
     onScroll() {
-      if (!this.loadingMore && (this.scrollTop() > this.scrollHeight() - this.scrollOffset)) {
+      if (!this.list.loadingMore && (this.scrollTop() > this.scrollHeight() - this.scrollOffset)) {
         this.loadNextPage();
       }
     },

changelogs/unreleased/41738-fix-sorting-issues-is-wrong-in-list-with-pagination.yml

+---
+title: "Fix If-Check the result that a function was executed several times"
+merge_request: 20640
+author: Max Dicker
+type: fixed

spec/javascripts/boards/board_list_spec.js

@@ -200,6 +200,15 @@ describe('Board list component', () => {
     });
   });
 
+  it('does not load issues if already loading', () => {
+    component.list.nextPage = spyOn(component.list, 'nextPage').and.returnValue(new Promise(() => {}));
+
+    component.onScroll();
+    component.onScroll();
+
+    expect(component.list.nextPage).toHaveBeenCalledTimes(1);
+  });
+
   it('shows loading more spinner', (done) => {
     component.showCount = true;
     component.list.loadingMore = true;