Values in webform report don't decrypted

I have enabled Webform (7.x-3.20), Webform Encrypt (7.x-1.0) and Webform Report (7.x-1.0) modules.

There are Webform that has fieldset with textfield encrypted via Webform Encrypt (AES 256).
Also there are Webform Report that has this encrypted textfield as its table column.
And values for this column are not decrypted when viewed on Webform Report page.

How can this could be helped?