Snapmaker Luban 4.0.1 deb package installs, runs in back but no UI

Submitting this Linux specific issue:
Installing Snapmaker Luban with .deb package in Debian based Linux distro.
Installation throws no errors, but when running the app nothing shows.
Process list shows Luban processes running.

Luban /Electron app tries to open too many iNotify file watchers for a default Debian installation.

Increase number of iNotify file watchers allowed.
I used this guide, worked like a charm: Increasing the amount of inotify watchers · GitHub