That's even more horrible, i've tried it. Chrome uses his own notifications on macOS instead of integrating with systems notification manager and always when one of these ugly, poor animated guys pops up, i can search through my 100 open browser tabs to find the damn chat. Millions of flamewars were fought about what's the best window manager and we are ending up with a single window with a tabbar? Are you kids serious?
This was the main reason I used the electron version of slack and tbh it makes little difference if I run a dedicated Firefox window or the app since my laptop is less than a year old and could run a few hundred instances of either without sweating..
I'm on Firefox these days; with noscript (once you go through the initial few days of pain whitelisting things) it works brilliantly; I would suggest you give it another chance..
Unless you try to book flights from britishairways though.
But I find it to be a humorous typo given the topic of this discussion as ionic is a browser-based cross-platform mobile framework.
So if the Electron bloat is such as issue for you, just hit Slack in the web directly.