I have a legacy application that I am trying to migrate and utilise the features of Istio. However a problem that I have noticed is that Istio appears to be overriding the custom text being set in the status header by the application, for example
Instead of returning “201 Created - Partially Successful” which is what is specified by the application the response being received is “201 Created” which is the http default for that status code.
I believe it is the envoy layer which is performing this operation so is there anyway to intercept and prevent the custom text from being removed?