diff --git a/frontend/src/component/feature/form/form-add-feature-component.jsx b/frontend/src/component/feature/form/form-add-feature-component.jsx
index fc2c575b15..1d357e285c 100644
--- a/frontend/src/component/feature/form/form-add-feature-component.jsx
+++ b/frontend/src/component/feature/form/form-add-feature-component.jsx
@@ -13,6 +13,10 @@ class AddFeatureComponent extends Component {
         window.onbeforeunload = () => 'Data will be lost if you leave the page, are you sure?';
     }
 
+    componentWillUnmount() {
+        window.onbeforeunload = false;
+    }
+
     render() {
         const {
             input,
diff --git a/frontend/src/component/feature/form/form-add-feature-container.jsx b/frontend/src/component/feature/form/form-add-feature-container.jsx
index 1943315150..3b52947ae0 100644
--- a/frontend/src/component/feature/form/form-add-feature-container.jsx
+++ b/frontend/src/component/feature/form/form-add-feature-container.jsx
@@ -11,7 +11,7 @@ class WrapperComponent extends Component {
     constructor() {
         super();
         this.state = {
-            featureToggle: { strategies: [], enabled: true },
+            featureToggle: { name: '', description: '', strategies: [], enabled: true },
             errors: {},
             dirty: false,
         };
@@ -71,7 +71,7 @@ class WrapperComponent extends Component {
         const { featureToggle } = this.state;
         featureToggle.createdAt = new Date();
 
-        if (Array.isArray(featureToggle.strategies)) {
+        if (Array.isArray(featureToggle.strategies && featureToggle.strategies.length > 0)) {
             featureToggle.strategies.forEach(s => {
                 delete s.id;
             });
@@ -115,7 +115,7 @@ const mapDispatchToProps = dispatch => ({
 });
 
 const FormAddContainer = connect(
-    () => {},
+    () => ({}),
     mapDispatchToProps
 )(WrapperComponent);
 
diff --git a/frontend/src/component/feature/form/form-copy-feature-component.jsx b/frontend/src/component/feature/form/form-copy-feature-component.jsx
index a27534658a..3dfeb97464 100644
--- a/frontend/src/component/feature/form/form-copy-feature-component.jsx
+++ b/frontend/src/component/feature/form/form-copy-feature-component.jsx
@@ -66,7 +66,7 @@ class CopyFeatureComponent extends Component {
 
         if (replaceGroupId) {
             copyToggle.strategies.forEach(s => {
-                if (s.parameters.groupId) {
+                if (s.parameters && s.parameters.groupId) {
                     s.parameters.groupId = newToggleName;
                 }
             });
diff --git a/frontend/src/component/feature/form/strategies-section.jsx b/frontend/src/component/feature/form/strategies-section.jsx
index 8241142dda..308debc184 100644
--- a/frontend/src/component/feature/form/strategies-section.jsx
+++ b/frontend/src/component/feature/form/strategies-section.jsx
@@ -8,7 +8,7 @@ import { HeaderTitle } from '../../common';
 class StrategiesSectionComponent extends React.Component {
     static propTypes = {
         strategies: PropTypes.array.isRequired,
-        featureToggleName: PropTypes.string.isRequired,
+        featureToggleName: PropTypes.string,
         addStrategy: PropTypes.func,
         removeStrategy: PropTypes.func,
         updateStrategy: PropTypes.func,
diff --git a/frontend/src/component/feature/form/strategy-input-percentage.jsx b/frontend/src/component/feature/form/strategy-input-percentage.jsx
index 4652d214a7..4f0e7b6976 100644
--- a/frontend/src/component/feature/form/strategy-input-percentage.jsx
+++ b/frontend/src/component/feature/form/strategy-input-percentage.jsx
@@ -26,7 +26,7 @@ const InputPercentage = ({ name, minLabel, maxLabel, value, onChange }) => (
                 <span style={infoLabelStyle}>{maxLabel}</span>&nbsp;
             </Cell>
         </Grid>
-        <Slider min={0} max={100} defaultValue={value} value={value} onChange={onChange} label={name} />
+        <Slider min={0} max={100} value={value} onChange={onChange} label={name} />
     </div>
 );
 
diff --git a/frontend/src/component/menu/drawer.jsx b/frontend/src/component/menu/drawer.jsx
index 095b31ed9f..fe4b020920 100644
--- a/frontend/src/component/menu/drawer.jsx
+++ b/frontend/src/component/menu/drawer.jsx
@@ -40,6 +40,7 @@ export const DrawerMenu = ({ links = [] }) => (
             {links.map(link => (
                 <a
                     href={link.href}
+                    key={link.href}
                     target="_blank"
                     className={[styles.navigationLink, 'mdl-color-text--grey-900'].join(' ')}
                     title={link.title}