This does look like a bug. We should be able to fix it, however it look like your support period has expired. Please renew your key here and we will investigate and fix this issue.
Had a semi-related followup question. I recently upgraded to build 2753 and in my project properties I see three choices for Intellisense engine. Clang (default), VS2017, and “Advanced Clang Intellisense”. I know what ‘VS2017″ is, but what’s the difference between the other two? Is it what you could switch off about six months ago by clicking the Stopwatch icon and disabling…. something? I can’t remember exactly what it was.