Why? I haven't had any issues with it.
I even have a shortcut on linux for dmenu, typing "signal" opens the chrome extension URL, opening the app in a new popup window (not a full browser, just the app in a chromeless window). So it functions just like a normal app to me. This is the `signal` bash script:
#!/usr/bin/dash
/opt/google/chrome-unstable/google-chrome-unstable --user-data-dir=/home/dmix/.config/google-chrome-unstable --profile-directory=Default --app-id=bikioccmkafdpakkkcpdbppfkghcmihk