Notebook Quick Notes Color Picker Crash

Notebook Quick Notes Color Picker Crash

Hi, I am using Zoho Notebook on Mac OS X 10.13.6

The "QuickNotes" Menu Bar application crashes immediately whenever I click the paint bucket and choose a new color. It crashes if I choose a preset color, or if I open the picker and click a color.

To be specific, the Menu Bar application ONLY crashes. The Notebook primary application remains open and running correctly. I can then go into the application preferences, go to Quick Note settings, and click 

View my screen capture video of the crash (20 MB) at:
http://bit.ly/notecrash