prevent pagination during the loadInitialData

app/coffee/modules/backlog/main.coffee

@@ -63,7 +63,8 @@ class BacklogController extends mixOf(taiga.Controller, taiga.PageMixin, taiga.F
         bindMethods(@)
 
         @.page = 1
-        @.disablePagination = true
+        @.disablePagination = false
+        @.firstLoadComplete = false
         @scope.userstories = []
 
         @scope.sectionName = @translate.instant("BACKLOG.SECTION_NAME")
@@ -77,7 +78,7 @@ class BacklogController extends mixOf(taiga.Controller, taiga.PageMixin, taiga.F
 
         # On Success
         promise.then =>
-            @.disablePagination = false
+            @.firstLoadComplete = true
 
             title = @translate.instant("BACKLOG.PAGE_TITLE", {projectName: @scope.project.name})
             description = @translate.instant("BACKLOG.PAGE_DESCRIPTION", {
@@ -267,7 +268,7 @@ class BacklogController extends mixOf(taiga.Controller, taiga.PageMixin, taiga.F
 
     loadUserstories: (resetPagination = false, pageSize) ->
         return null if !@scope.projectId
-        
+
         @.loadingUserstories = true
         @.disablePagination = true
         @scope.httpParams = @.getUrlFilters()

app/partials/includes/modules/backlog-table.jade

@@ -12,7 +12,7 @@ div.backlog-table-body(
     tg-backlog-sortable,
     ng-class="{'show-tags': ctrl.showTags, 'active-filters': ctrl.activeFilters}"
     infinite-scroll="ctrl.loadUserstories()"
-    infinite-scroll-disabled="ctrl.disablePagination"
+    infinite-scroll-disabled="ctrl.disablePagination || !ctrl.firstLoadComplete"
     infinite-scroll-immediate-check='false'
 )
     include ../components/backlog-row