Merge pull request #1156 from XyanZhang/master

fix: clicking on the sidebar collapse button results in a blank screen.

src/components/Layout/Sider.js

@@ -28,7 +28,7 @@ class Sider extends PureComponent {
         trigger={null}
         collapsible
         collapsed={collapsed}
-        onBreakpoint={!isMobile && onCollapseChange}
+        onBreakpoint={!isMobile ? onCollapseChange : (broken) => {}}
         className={styles.sider}
       >
         <div className={styles.brand}>

src/themes/index.less

@@ -3,7 +3,7 @@
 
 body {
   height: 100%;
-  overflow-y: hidden;
+  overflow-y: auto;
   background-color: #f8f8f8;
 }