[Issue 19921] Visual D has incompatibility with VS 2019.1

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19921

--- Comment #3 from Srxy Wang <x13989 at 126.com> ---
My test result is that only auto-completion and go-to-definition is affected by
this. This can be fixed by opening the unrecommended option pointed in the
image. But we are not recommended to switch it on, so please bring a full fix
(use no sync autoload).

--