diff --git a/app/assets/javascripts/projects/index.js b/app/assets/javascripts/projects/index.js
index 31cd7c216..0044f23ca 100644
--- a/app/assets/javascripts/projects/index.js
+++ b/app/assets/javascripts/projects/index.js
@@ -17,7 +17,6 @@ var ProjectsIndex = (function() {
   var editProjectModal = '#edit-modal';
   var moveToModal = '#move-to-modal';
 
-  var manageProjectUsersModal = null;
   var exportProjectsModal = null;
   var exportProjectsModalHeader = null;
   var exportProjectsModalBody = null;
@@ -173,7 +172,7 @@ var ProjectsIndex = (function() {
 
   function initManageUsersModal() {
     // Reload users tab HTML element when modal is closed
-    manageProjectUsersModal.on('hide.bs.modal', function() {
+    $(document).on('ajax:success', '#user_assignments_modal form', function() {
       refreshCurrentView();
     });
   }
@@ -259,56 +258,6 @@ var ProjectsIndex = (function() {
     });
   }
 
-  // Initialize ajax listeners and elements style on modal body. This
-  // function must be called when modal body is changed.
-  function initManageProjectUsersModalBody(data) {
-    manageProjectUsersModal.find('.modal-title').html(data.html_title);
-    manageProjectUsersModal.find('.modal-body').html(data.html_body).find('.selectpicker').selectpicker();
-    manageProjectUsersModal.find('.modal-footer').html(data.html_footer);
-  }
-
-  // Initialize reloading manage user modal content after posting new
-  // user.
-  function initAddUserForm() {
-    manageProjectUsersModal
-      .on('ajax:success', '.add-user-form', function(e, data) {
-        var errorBlock;
-        initManageProjectUsersModalBody(data);
-        if (data.status === 'error') {
-          $(this).addClass('has-error');
-          errorBlock = $(this).find('span.help-block');
-          if (errorBlock.length && errorBlock.length > 0) {
-            errorBlock.html(data.error);
-          } else {
-            $(this).append("<span class='help-block col-xs-8'>" + data.error + '</span>');
-          }
-        }
-      });
-  }
-
-  // Initialize remove user from project links.
-  function initRemoveUserLinks() {
-    manageProjectUsersModal.on('ajax:success', '.remove-user-link', function(e, data) {
-      initManageProjectUsersModalBody(data);
-    });
-  }
-
-  //
-  function initUserRoleForms() {
-    manageProjectUsersModal
-      .on('change', '.update-user-form select', function() {
-        $(this).parents('form').submit();
-      });
-
-    manageProjectUsersModal
-      .on('ajax:success', '.update-user-form', function(e, data) {
-        initManageProjectUsersModalBody(data);
-      })
-      .on('ajax:error', function() {
-        // TODO
-      });
-  }
-
   function updateSelectedCards() {
     $('.project-card').removeClass('selected');
     $.each(selectedProjects, function(index, value) {
@@ -663,7 +612,6 @@ var ProjectsIndex = (function() {
    * Initializes cards view
    */
   function init() {
-    manageProjectUsersModal = $('#manageProjectUsersModal');
     exportProjectsModal = $('#export-projects-modal');
     exportProjectsModalHeader = exportProjectsModal.find('.modal-title');
     exportProjectsModalBody = exportProjectsModal.find('.modal-body');
@@ -676,9 +624,6 @@ var ProjectsIndex = (function() {
     initExportProjects();
     initDeleteFoldersToolbarButton();
     initArchiveRestoreToolbarButtons();
-    initAddUserForm();
-    initRemoveUserLinks();
-    initUserRoleForms();
     initEditButton();
     initMoveButton();
     initProjectsViewModeSwitch();
diff --git a/app/assets/javascripts/shared/modal_close_redirect.js b/app/assets/javascripts/shared/modal_close_redirect.js
index fd33745b4..15c060d03 100644
--- a/app/assets/javascripts/shared/modal_close_redirect.js
+++ b/app/assets/javascripts/shared/modal_close_redirect.js
@@ -4,8 +4,11 @@
   function initModalCloseListeners() {
     $(document).on('hidden.bs.modal', '[data-action*="modal-close"]', function({ currentTarget }) {
       let targetPath = currentTarget.getAttribute('data-target');
-      animateSpinner();
-      Turbolinks.visit(targetPath);
+
+      if (targetPath) {
+        animateSpinner();
+        Turbolinks.visit(targetPath);
+      }
     });
   }
 
diff --git a/app/views/access_permissions/experiments/modals/_edit_modal.html.erb b/app/views/access_permissions/experiments/modals/_edit_modal.html.erb
index 8b68f3aa0..684082584 100644
--- a/app/views/access_permissions/experiments/modals/_edit_modal.html.erb
+++ b/app/views/access_permissions/experiments/modals/_edit_modal.html.erb
@@ -1,6 +1,6 @@
 <% # frozen_string_literal: true %>
 
-<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close" data-target="<%= project_path %>">
+<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close">
   <div class="modal-dialog modal-lg" role="document">
     <div class="modal-content" id="user_assignments_modal">
       <div class="modal-header">
diff --git a/app/views/access_permissions/experiments/modals/_show_modal.html.erb b/app/views/access_permissions/experiments/modals/_show_modal.html.erb
index c5f63041a..52c2bd104 100644
--- a/app/views/access_permissions/experiments/modals/_show_modal.html.erb
+++ b/app/views/access_permissions/experiments/modals/_show_modal.html.erb
@@ -1,6 +1,6 @@
 <% # frozen_string_literal: true %>
 
-<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close" data-target="<%= project_path %>">
+<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close">
   <div class="modal-dialog modal-md" role="document">
     <div class="modal-content" id="user_assignments_modal">
       <div class="modal-header">
diff --git a/app/views/access_permissions/projects/modals/_edit_modal.html.erb b/app/views/access_permissions/projects/modals/_edit_modal.html.erb
index 0445e1a13..a161d09cc 100644
--- a/app/views/access_permissions/projects/modals/_edit_modal.html.erb
+++ b/app/views/access_permissions/projects/modals/_edit_modal.html.erb
@@ -1,6 +1,6 @@
 <% # frozen_string_literal: true %>
 
-<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close" data-target="<%= projects_path %>">
+<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close">
   <div class="modal-dialog modal-lg" role="document">
     <%= render 'access_permissions/partials/edit_assignments_content', project: project, new_resource_path: new_resource_path, update_path: update_path %>
   </div>
diff --git a/app/views/access_permissions/projects/modals/_show_modal.html.erb b/app/views/access_permissions/projects/modals/_show_modal.html.erb
index fb3bbee15..b532868b2 100644
--- a/app/views/access_permissions/projects/modals/_show_modal.html.erb
+++ b/app/views/access_permissions/projects/modals/_show_modal.html.erb
@@ -1,6 +1,6 @@
 <% # frozen_string_literal: true %>
 
-<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close" data-target="<%= projects_path %>">
+<div class="modal fade" tabindex="-1" role="dialog" data-action="modal-close">
   <div class="modal-dialog modal-lg" role="document">
     <div class="modal-content" id="user_assignments_modal">
       <div class="modal-header">