If status line is set to something different in RateLimiter( Feature Req) test fail in proxy scenario:
Error: io.undertow.server.handlers.RateLimiterTestCase.testWindowSliding[proxy] – Time elapsed: 0.079 s <<< FAILURE!
org.junit.ComparisonFailure: Iteration: 0, request in sequence: 21 expected:<Too [many r]equests> but was:<Too [Many R]equests>
at org.junit.Assert.assertEquals(Assert.java:117)

Feature: https://github.com/undertow-io/undertow/pull/1777