[Bug] jsketcher desktop app blank screen

Thanks for creating this project. I am trying to run the desktop electron app in the `dev` branch. I was able to build and install the app on MacOS. However, when I run the app I see a white screen with no buttons. 

## System information
macOS Sonoma 14.2.1 (23C71)
npm version 10.2.0
ppm version 8.15.3

Any help is appreciated. 
