Weex textarea crashes after calling blur

The

vue file contains the following statement

this.$refs.editor.blur ();

has a good chance of crashing. The error message is

java.lang.NullPointerException: Attempt to invoke interface method "boolean android.view.inputmethod.InputConnection.finishComposingText ()" on a null object reference

    at android.view.inputmethod.InputConnectionWrapper.finishComposingText(InputConnectionWrapper.java:78)
    at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:362)
    at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:78)
    at android.os.Handler.dispatchMessage(Handler.java:111)
    at android.os.Looper.loop(Looper.java:207)
    at android.app.ActivityThread.main(ActivityThread.java:5837)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:782)

Weex vue.js

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