I have AutoCad Lt for Mac 2018.1 with Hotfix installed. My MacBook Pro MacOS High Sierra 10.13.4 with Touch Bar.

My shift toggle for Ortho was working great until I installed 2018.1. Now only my right shift key works to toggle Ortho on and off, my left key (preferred one) doesn't work at all. My left shift key works when typing text and with all other software.