diff --git a/module/common/view/kanban.html.php b/module/common/view/kanban.html.php
index ffd356593c..8bc37cdcb9 100644
--- a/module/common/view/kanban.html.php
+++ b/module/common/view/kanban.html.php
@@ -148,7 +148,7 @@ function renderProjectItem(item, $item)
 
     if(item.status === 'doing')
     {
-        var progress = item.hours ? Math.round(item.hours.progress || 0) : 0;
+        var progress = item.hours && !Array.isArray(item.hours) ? Math.round(item.hours.progress || 0) : 0;
         var $progress = $item.find('.progress-pie');
         if(!$progress.length)
         {
@@ -191,7 +191,7 @@ function renderExecutionItem(item, $item)
     }
     $title.text(item.name).attr('title', item.name);
 
-    var progress = item.progress || (item.hours ? item.hours.progress : undefined);
+    var progress = item.progress || (item.hours && !Array.isArray(item.hours) ? Math.round(item.hours.progress) : undefined);
     if(progress === undefined && window.hourList)
     {
         var hoursInfo = window.hourList[item._id];
@@ -320,14 +320,18 @@ function updateKanbanAffixState()
     {
         var $board = $(this);
         var offsetTop = $board.offset().top;
-        if(scrollTop >= offsetTop && offsetTop > currentOffsetTop)
+        if(scrollTop >= offsetTop && offsetTop > currentOffsetTop && scrollTop < (offsetTop + $board.outerHeight()))
         {
             currentOffsetTop = offsetTop;
             $currentAffixedBoard = $board;
         }
     });
 
-    if($lastAffixedBoard.length) affixKanbanHeader($lastAffixedBoard, false);
+    if($lastAffixedBoard.length && (!$currentAffixedBoard || $lastAffixedBoard[0] !== $currentAffixedBoard[0]))
+    {
+        affixKanbanHeader($lastAffixedBoard, false);
+    }
+
     if($currentAffixedBoard) affixKanbanHeader($currentAffixedBoard, true);
 }
 
diff --git a/module/product/js/kanban.js b/module/product/js/kanban.js
index 5a2a2b5b40..db2ac2681c 100644
--- a/module/product/js/kanban.js
+++ b/module/product/js/kanban.js
@@ -55,7 +55,7 @@ function processKanbanData(key, programsData)
                     $.each(productProjects, function(projectID)
                     {
                         var project = projectList[projectID];
-                        if(!project) return;
+                        if(!project || !project.id) return;
                         var projectItem = $.extend({}, project, {id: 'project-' + projectID, _id: projectID});
                         items.doingProject.push(projectItem);
                     });
@@ -70,7 +70,7 @@ function processKanbanData(key, programsData)
                 $.each(productProjects, function(projectID)
                 {
                     var execution = latestExecutions[projectID];
-                    if(!execution) return;
+                    if(!execution || !execution.id) return;
                     var executionItem = $.extend({}, execution, {id: 'execution-' + execution.id, _id: execution.id});
                     items.doingExecution.push(executionItem);
                 });
@@ -83,7 +83,7 @@ function processKanbanData(key, programsData)
             {
                 $.each(releases, function(releaseID, release)
                 {
-                    if(!release) return;
+                    if(!release || !release.id) return;
                     var releaseItem = $.extend({}, release, {id: 'release-' + releaseID, _id: releaseID});
                     items.normalRelease.push(releaseItem);
                 });
diff --git a/module/program/js/kanban.js b/module/program/js/kanban.js
index 7429511136..a58641f5f5 100644
--- a/module/program/js/kanban.js
+++ b/module/program/js/kanban.js
@@ -68,7 +68,7 @@ function processKanbanData(key, programsData)
                     items.doingProject.push(projectItem);
 
                     var execution = project.execution;
-                    if(!execution) return;
+                    if(!execution || !execution.id) return;
                     var executionItem = $.extend({}, execution, {id: 'execution-' + execution.id, _id: execution.id});
                     items.doingExecution.push(executionItem);
                 });
@@ -81,7 +81,7 @@ function processKanbanData(key, programsData)
             {
                 $.each(releases, function(releaseID, release)
                 {
-                    if(!release) return;
+                    if(!release || !release.id) return;
                     var releaseItem = $.extend({}, release, {id: 'release-' + releaseID, _id: releaseID});
                     items.normalRelease.push(releaseItem);
                 });
diff --git a/module/project/js/kanban.js b/module/project/js/kanban.js
index 091dd94671..4324d712c9 100644
--- a/module/project/js/kanban.js
+++ b/module/project/js/kanban.js
@@ -39,7 +39,7 @@ function processKanbanData(key, programGroup)
                     if(status === 'doing')
                     {
                         var execution = latestExecutions[projectID];
-                        if(execution)
+                        if(execution && execution.id)
                         {
                             var executionItem = $.extend({}, execution, {id: 'execution-' + execution.id, _id: execution.id});
                             items.doingExecution = [executionItem];