Stealth Check Macro creates error that "loses cursor" and breaks the game canvas.

[TeacherBobK]

I noticed that the community macros have been updated and I decided to return to a macro I found useful - The Stealth Check Macro. But when I use it executes properly but somewhere in the process it breaks the canvas. Using F12 I get the following error (see below). I created a new world that only has Community Marcos active and it still does it. I am on the latest stable version of Foundry using the 5E system.