I can also confirm the dark mode complete restart. You can't just click the close button, you have to go to the taskbar, Right-Click Enpass icon > Exit, then restart.
In the main window, if you have a precision touchpad (eg Surface Pro Type Cover), the scrolling is far to sensitive. You can actively scroll like normal, but once you take your fingers off to stop scrolling, the "momentum" picks up and sends the list scrolling again.
Seems like a big update, I'm excited to see the final product!