Open the map editor in JJS on Roblox PC, then try Esc first; in many Roblox UIs that closes the current editor or menu. If that does not work, look for a small X , Close , or Back button in the editor window, or try Ctrl + W if it’s running in a separate tab/window.

Common fixes

  • Press Esc once or twice.
  • Click outside the editor, then press Esc again.
  • Use Ctrl + W to close the active window or tab.
  • If the editor is stuck off-screen or hidden, lower display scaling or resolution so the close button becomes visible.

If it still won’t close

  • Reopen the game and check whether the editor is tied to a menu button instead of a separate window.
  • If the game freezes, close and relaunch Roblox.
  • Some Roblox editor tools don’t have a universal close shortcut, so the exact key can depend on the specific JJS mode or UI.

What most players do

For Roblox editor-style interfaces, the usual pattern is: Esc first, then the on-screen close button, then Ctrl + W if it behaves like a tab or panel.

TL;DR: Try Esc first, then the editor’s X/Close button, then Ctrl + W. If the button is hidden, adjust resolution or scaling so it appears.