Autodesk invests heavily in quality control
But when issues arise, product updates and fixes ensure the continued success of their customers and ours. Transparency is important, which is why Autodesk wants to share that they provided an update (AutoCAD 2018.0.1) very shortly after the AutoCAD 2018 launch to fix a bug in the product. They discovered a mistake they made with this update, quickly removed it to resolve the issue, and then provided a subsequent update (AutoCAD 2018.0.2) to resolve the root problem ASAP. More information is available via AutoCAD forums.
As a quick reminder, the Autodesk Desktop App introduced last year is an AutoCAD companion application that delivers security patches and updates for all versions of Microsoft Windows-based Autodesk products from 2015 on, as well as relevant learning content. More information about how it works is available here.