Cache response is different from live response when field filter is having invalid value

[Ziabatcha]

When live response is retrieved with invalid filter, observing 400 bad request code. But same request is executed for cache, observing response code as 200.

curl -X GET "/core-model-1-4:network-control-domain=live/control-construct=CO17694/logical-termination-point=LTP-MWPS-TTP-3-1/layer-protocol=LP-MWPS-TTP-3-1/air-interface-2-0:air-interface-pac/air-interface-configuration?fields=%5C%5C" -H "accept: application/json" 
{
  "code": 400,
  "message": "Bad Request"
}

Cache response:

curl -X GET "/core-model-1-4:network-control-domain=cache/control-construc=CO17694/logical-termination-point=LTP-MWPS-TTP-3-1/layer-protocol=LP-MWPS-TTP-3-1/air-interface-2-0:air-interface-pac/air-interface-configuration?fields=%5C%5C" -H "accept: application/json"

{
  "air-interface-2-0:air-interface-configuration": {}
}

[Ziabatcha]

Issue still observed with latest package MWDI 1.1.0.a_impl Observing 500 Internal server error when tried to retrieve the config with invalid filter.

http://xx:xx/core-model-1-4:network-control-domain=cache/control-construct=CO17694/logical-termination-point=LTP-MWPS-TTP-3-1/layer-protocol=LP-MWPS-TTP-3-1/air-interface-2-0:air-interface-pac/air-interface-configuration?fields=aa

{
  "code": 500,
  "message": "Internal Server Error"
}

[nardecchia-siae]

Tested with version 1.1.2.d_impl

[Ziabatcha]

Tested okay with 1.1.2d