Opening more than one instance is the default, developers have to actively work to block it. At least on desktop.
Which desktop?
It's not true for AppKit, SwiftUI, GTK, Qt, WinUI, or Electron, and I'm not sure what's left.
alt Hacker News
Which desktop?
It's not true for AppKit, SwiftUI, GTK, Qt, WinUI, or Electron, and I'm not sure what's left.