fix(Popup): Stop event propagation when press Escape on the popup (#515)

* Stop event propagation when press Escape on the popup

* Improvements after CR comments

* Update changelog

Author: sophieH29

CHANGELOG.md

@@ -22,6 +22,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ### Fixes
 - Fix the behaviour of `AutoControlledComponent` when `undefined` is passed as a prop value @layershifter ([#499](https://github.com/stardust-ui/react/pull/499))
+- Stop event propagation when press Escape on the popup @sophieH29 ([#515](https://github.com/stardust-ui/react/pull/515))
 
 <!--------------------------------[ v0.12.0 ]------------------------------- -->
 ## [v0.12.0](https://github.com/stardust-ui/react/tree/v0.12.0) (2018-11-19)

src/components/Popup/Popup.tsx

@@ -128,7 +128,10 @@ export default class Popup extends AutoControlledComponent<Extendable<PopupProps
     toggle: e => {
       this.trySetOpen(!this.state.open, e, true)
     },
-    closeAndFocusTrigger: e => this.closeAndFocusTrigger(e),
+    closeAndFocusTrigger: e => {
+      this.closeAndFocusTrigger(e)
+      e.stopPropagation()
+    },
   }
 
   private closeAndFocusTrigger = e => {