Arrows and Lines Won't Display

Just got reply from Articulate support. They are working on the issue. Here is how to install previous version:

1) Open your Articulate 360 desktop app by clicking the icon in your computer’s system tray (by the clock) or using the shortcut on your desktop. 

 2) Hover over Storyline, click the drop-down arrow that appears, and choose the uninstall option. 

 3) Download and install the previous version here: https://download.articulate.com/360/360.16/Articulate.Storyline.3.16.15842.0.msi

 4) To open Storyline, go to your computer’s Start menu and select it from your list of apps. Or, create a shortcut for it on your desktop or taskbar. (You won’t be able to open it from your Articulate 360 desktop app. It’ll show an Update button rather than an Open button while this older version is installed.)