It's a lot more stable now. Controls are closer to system controls, although it's not ideal of course. It's going to be out of beta next month, so it won't take too long.
To be honest, hope you don't mind the criticism, but I think using custom controls was the wrong choice.
I dislike Slack/etc because they are non-native which means they are slow, and behave incorrectly. Eul will address the speed, but without the native controls it's unlikely to behave correctly.
Behaviour I'd be looking for to match system controls: text field editing, including shortcut keys, accessibility of controls using system accessibility attributes (which can be used for screenreaders, productivity apps and OS scripting), pervasive drag and drop support, proxy icons, copy/paste (with rich-text formatting where necessary).
There's a lot to do, much of which comes "for free" or at least "discounted" when using system controls. I really hope you prove me wrong and I wish you all the best with this. I may well end up using Eul anyway because of the speed, but I thought I'd try and provide my motivation for why using system controls is such a key part of my dislike for Electron apps.
