From code inspection, I suspect that when we disable hot restart, two distinct stats scopes will not share underlying counter allocations for same name counters, e.g. "foo.bar" in scope A will not alias "foo.bar" in scope B. This is because when !ENVOY_HOT_RESTART we use Stats::HeapRawStatDataAllocator (

This issue need to be first verified and if necessary we need to switch to a reference count backed allocator for !ENVOY_HOT_RESTART builds.