Cipher filter not working on numeric data

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1

I am using cipher filter and I am providing numeric value as a source in the filter.
Getting below error.
It's working if I give the source as a string value.

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"error": "undefined method `empty?' for 1:Fixnum

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Please help me how cipher filter works for a numeric value.

2

No one tried this
Or this is bug in Cipher filter??

3

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