Disabling scoring for a Search request is throwing an uncaught exception against 7.6

I am seeing the following test fail in the CXX tests against 7.6 in the scripted build pipeline and also in the Capella 7.6 pipeline: test_integration_search.cxx in the test: 
TEST_CASE("integration: search query")
 
It fails in the section about scoring under the heading: SECTION("disable scoring")
 
The output is this:

libc++abi: terminating with uncaught exception of type std::out_of_range: JSON object key "score" not found 

The only way to get this error to not happen is to comment out the line 176:
req.disable_scoring = true;