Replace fa-plus icons with GitLab SVG plus icon

app/views/projects/buttons/_dropdown.html.haml

@@ -8,9 +8,9 @@
 
 - if show_menu
   .project-action-button.dropdown.inline<
-    %a.btn.dropdown-toggle.has-tooltip.qa-create-new-dropdown{ href: '#', title: _('Create new...'), 'data-toggle' => 'dropdown', 'data-container' => 'body', 'aria-label' => _('Create new...'), 'data-display' => 'static' }
-      = icon('plus')
-      = icon("caret-down")
+    %a.btn.btn-default.gl-button.dropdown-toggle.has-tooltip.qa-create-new-dropdown{ href: '#', title: _('Create new...'), 'data-toggle' => 'dropdown', 'data-container' => 'body', 'aria-label' => _('Create new...'), 'data-display' => 'static' }
+      = sprite_icon('plus', css_class: 'gl-icon')
+      = sprite_icon("chevron-down", css_class: 'gl-icon')
     %ul.dropdown-menu.dropdown-menu-right.project-home-dropdown
       - if can_create_issue || merge_project || can_create_project_snippet
         %li.dropdown-header= _('This project')

changelogs/unreleased/dimitrieh-master-patch-65978.yml

+---
+title: Replace fa-plus icons with GitLab SVG plus icon
+merge_request: 36972
+author:
+type: changed

ee/app/assets/javascripts/related_issues/components/related_issues_block.vue

 <script>
-import { GlLink } from '@gitlab/ui';
+import { GlLink, GlIcon } from '@gitlab/ui';
 import Icon from '~/vue_shared/components/icon.vue';
 import AddIssuableForm from './add_issuable_form.vue';
 import RelatedIssuesList from './related_issues_list.vue';
@@ -15,6 +15,7 @@ export default {
   components: {
     Icon,
     GlLink,
+    GlIcon,
     AddIssuableForm,
     RelatedIssuesList,
   },
@@ -160,7 +161,7 @@ export default {
               data-qa-selector="related_issues_plus_button"
               @click="$emit('toggleAddRelatedIssuesForm', $event)"
             >
-              <i class="fa fa-plus" aria-hidden="true"></i>
+              <gl-icon name="plus" aria-hidden="true" />
             </button>
           </div>
         </h3>