July 2018 patches for both Windows and Officebrought bugs and bugs of bugs— many of which haven''t been solved, even now.
We have even reached the unprecedented stage where the .NET teamopenly warned people against installing buggy updates, and the Monthly Rollup previews got shoved down the Automatic Update chute to fix bugs in the primary Monthly Rollup.July was more galling than most months because the patches caused widespread problems for many, while plugging security holes for exactly zero widespread infections.