diff --git a/awx/ui/client/lib/components/code-mirror/code-mirror.directive.js b/awx/ui/client/lib/components/code-mirror/code-mirror.directive.js
index 9d8a0fcfca..4ca2af09f2 100644
--- a/awx/ui/client/lib/components/code-mirror/code-mirror.directive.js
+++ b/awx/ui/client/lib/components/code-mirror/code-mirror.directive.js
@@ -73,6 +73,9 @@ function atCodeMirrorController (
             return true;
         }
 
+        if (typeof str === 'undefined') {
+            return '---';
+        }
         if (typeof str !== 'string') {
             const yamlStr = jsyaml.safeDump(str);
             // jsyaml.safeDump doesn't process an empty object correctly
diff --git a/awx/ui/client/src/inventories-hosts/hosts/edit/host-edit.controller.js b/awx/ui/client/src/inventories-hosts/hosts/edit/host-edit.controller.js
index 219cee0b07..e32e1d5374 100644
--- a/awx/ui/client/src/inventories-hosts/hosts/edit/host-edit.controller.js
+++ b/awx/ui/client/src/inventories-hosts/hosts/edit/host-edit.controller.js
@@ -5,8 +5,8 @@
  *************************************************/
 
  export default
- 	['$scope', '$state', '$stateParams', 'GenerateForm', 'ParseTypeChange', 'HostsService', 'host', '$rootScope',
- 	function($scope, $state, $stateParams, GenerateForm, ParseTypeChange, HostsService, host, $rootScope){
+ 	['$scope', '$state', '$stateParams', 'GenerateForm', 'HostsService', 'host', '$rootScope',
+ 	function($scope, $state, $stateParams, GenerateForm, HostsService, host, $rootScope){
  		$scope.parseType = 'yaml';
  		$scope.formCancel = function(){
  			$state.go('^', null, {reload: true});
diff --git a/awx/ui/client/src/inventories-hosts/inventories/related/hosts/add/host-add.controller.js b/awx/ui/client/src/inventories-hosts/inventories/related/hosts/add/host-add.controller.js
index 3513652a98..80105c6eaa 100644
--- a/awx/ui/client/src/inventories-hosts/inventories/related/hosts/add/host-add.controller.js
+++ b/awx/ui/client/src/inventories-hosts/inventories/related/hosts/add/host-add.controller.js
@@ -4,26 +4,18 @@
  * All Rights Reserved
  *************************************************/
 
-export default ['$state', '$stateParams', '$scope', 'RelatedHostsFormDefinition', 'ParseTypeChange',
+export default ['$state', '$stateParams', '$scope', 'RelatedHostsFormDefinition',
                 'GenerateForm', 'HostsService', 'GetBasePath', 'ToJSON', 'canAdd',
-                function($state, $stateParams, $scope, RelatedHostsFormDefinition, ParseTypeChange,
+                function($state, $stateParams, $scope, RelatedHostsFormDefinition,
                          GenerateForm, HostsService, GetBasePath, ToJSON, canAdd) {
 
         init();
 
         function init() {
             $scope.canAdd = canAdd;
-            $scope.parseType = 'yaml';
             $scope.host = { enabled: true };
             // apply form definition's default field values
             GenerateForm.applyDefaults(RelatedHostsFormDefinition, $scope);
-
-            ParseTypeChange({
-                scope: $scope,
-                field_id: 'host_host_variables',
-                variable: 'host_variables',
-                parse_variable: 'parseType'
-            });
         }
         $scope.formCancel = function() {
             $state.go('^');
diff --git a/awx/ui/client/src/inventories-hosts/inventories/standard-inventory/add/inventory-add.controller.js b/awx/ui/client/src/inventories-hosts/inventories/standard-inventory/add/inventory-add.controller.js
index 5d332b80f0..469a976dc2 100644
--- a/awx/ui/client/src/inventories-hosts/inventories/standard-inventory/add/inventory-add.controller.js
+++ b/awx/ui/client/src/inventories-hosts/inventories/standard-inventory/add/inventory-add.controller.js
@@ -30,14 +30,6 @@ function InventoriesAdd($scope, $location,
 
         // apply form definition's default field values
         GenerateForm.applyDefaults(form, $scope);
-
-        $scope.parseType = 'yaml';
-        ParseTypeChange({
-            scope: $scope,
-            variable: 'inventory_variables',
-            parse_variable: 'parseType',
-            field_id: 'inventory_inventory_variables'
-        });
     }
 
     // Save
diff --git a/awx/ui/client/src/workflow-results/workflow-results.controller.js b/awx/ui/client/src/workflow-results/workflow-results.controller.js
index 83b9ba5d32..13856a430c 100644
--- a/awx/ui/client/src/workflow-results/workflow-results.controller.js
+++ b/awx/ui/client/src/workflow-results/workflow-results.controller.js
@@ -1,8 +1,8 @@
 export default ['workflowData', 'workflowResultsService', 'workflowDataOptions',
-    'jobLabels', 'workflowNodes', '$scope', 'ParseTypeChange',
+    'jobLabels', 'workflowNodes', '$scope',
     'ParseVariableString', 'count', '$state', 'i18n', 'WorkflowChartService', '$filter',
     'moment', function(workflowData, workflowResultsService,
-    workflowDataOptions, jobLabels, workflowNodes, $scope, ParseTypeChange,
+    workflowDataOptions, jobLabels, workflowNodes, $scope,
     ParseVariableString, count, $state, i18n, WorkflowChartService, $filter,
     moment) {
         let nodeRef;
@@ -167,7 +167,6 @@ export default ['workflowData', 'workflowResultsService', 'workflowDataOptions',
 
             // set up a read only code mirror for extra vars
             $scope.variables = ParseVariableString($scope.workflow.extra_vars);
-            $scope.parseType = 'yaml';
             $scope.varsTooltip= i18n._('Read only view of extra variables added to the workflow.');
             $scope.varsLabel = i18n._('Extra Variables');
             $scope.varsName = 'extra_vars';
diff --git a/awx/ui/client/src/workflow-results/workflow-results.partial.html b/awx/ui/client/src/workflow-results/workflow-results.partial.html
index fed1af57d0..c90435ec33 100644
--- a/awx/ui/client/src/workflow-results/workflow-results.partial.html
+++ b/awx/ui/client/src/workflow-results/workflow-results.partial.html
@@ -220,12 +220,12 @@
                     <!-- EXTRA VARIABLES DETAIL -->
                     <at-code-mirror
                         ng-if="variables"
-                        variables="{{ variables }}"
+                        variables="variables"
                         tooltip="{{ varsTooltip }}"
                         label="{{ varsLabel }}"
                         label-class="WorkflowResults-extraVarsLabel"
                         name="{{ varsName }}"
-                        disabled="disabled">
+                        disabled="true">
                     </at-code-mirror>
 
                     <!-- LABELS DETAIL -->