Apps that are Chromium or Electron base crashes on Catalina beta 6 (19A536g)
Unfortunately, the best you can do is revert to Mojave. This is a bug in AppKit that Apple caused (and must soon fix). It persists in beta 7.

I can feel your pain. I need my Electron apps like VS Code and Insomnia. The bug also affects JetBrains apps like PyCharm and Android Studio (based off IntelliJ).