use rc-calendar@~9.7.0

components/date-picker/RangePicker.tsx

@@ -320,6 +320,7 @@ class RangePicker extends React.Component<any, RangePickerState> {
         type="close-circle"
         className={`${prefixCls}-picker-clear`}
         onClick={this.clearSelection}
+        theme={'filled'}
       />
     ) : null;
 

components/date-picker/WeekPicker.tsx

@@ -115,6 +115,7 @@ class WeekPicker extends React.Component<any, any> {
         type="close-circle"
         className={`${prefixCls}-picker-clear`}
         onClick={this.clearSelection}
+        theme={'filled'}
       />
     ) : null;
     const input = ({ value }: {  value: moment.Moment | undefined }) => {

components/date-picker/createPicker.tsx

@@ -162,6 +162,7 @@ export default function createPicker(TheCalendar: React.ComponentClass): any {
           type="close-circle"
           className={`${prefixCls}-picker-clear`}
           onClick={this.clearSelection}
+          theme={'filled'}
         />
       ) : null;
 

package.json

@@ -56,7 +56,7 @@
     "prop-types": "^15.5.7",
     "raf": "^3.4.0",
     "rc-animate": "^2.4.1",
-    "rc-calendar": "~9.6.0",
+    "rc-calendar": "~9.7.0",
     "rc-cascader": "~0.16.0",
     "rc-checkbox": "~2.1.5",
     "rc-collapse": "~1.10.0",