fix: should be possible to remove all variants.

frontend/CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 The latest version of this document is always available in
 [releases][releases-url].
 
+# 3.6.5
+- fix: should be possible to remove all variants. 
+
 # 3.6.4
 - fix: minur ux tweaks
 

frontend/src/component/feature/variant/update-variant-container.jsx

@@ -21,7 +21,9 @@ const mapDispatchToProps = (dispatch, ownProps) => ({
         const { featureToggle } = ownProps;
         const currentVariants = featureToggle.variants || [];
         const variants = currentVariants.filter((v, i) => i !== index);
-        updateWeight(variants, 1000);
+        if (variants.length > 0) {
+            updateWeight(variants, 1000);
+        }
         requestUpdateFeatureToggleVariants(featureToggle, variants)(dispatch);
     },
     updateVariant: (index, variant) => {