Atom does not hide, instead this error message came up.
Atom: 1.20.0 x64
Electron: 1.6.9
OS: Mac OS X 10.12.6
Thrown From: atom-panels package 0.4.1
Stack Trace
Uncaught TypeError: Cannot read property 'children' of undefined
At /Users/zastrow/.atom/packages/atom-panels/lib/panels.js:141
TypeError: Cannot read property 'children' of undefined
at Object.getTargetPane (/packages/atom-panels/lib/panels.js:141:14)
at Object.move (/packages/atom-panels/lib/panels.js:76:27)
at /packages/atom-panels/lib/panels.js:35:48)
at CommandRegistry.module.exports.CommandRegistry.handleCommandEvent (/Applications/Atom.app/Contents/Resources/app/src/command-registry.js:265:35)
at /Applications/Atom.app/Contents/Resources/app/src/command-registry.js:3:65
at KeymapManager.module.exports.KeymapManager.dispatchCommandEvent (/Applications/Atom.app/Contents/Resources/app/node_modules/atom-keymap/lib/keymap-manager.js:621:22)
at KeymapManager.module.exports.KeymapManager.handleKeyboardEvent (/Applications/Atom.app/Contents/Resources/app/node_modules/atom-keymap/lib/keymap-manager.js:412:28)
at WindowEventHandler.module.exports.WindowEventHandler.handleDocumentKeyEvent (/Applications/Atom.app/Contents/Resources/app/src/window-event-handler.js:100:42)
at HTMLDocument.<anonymous> (/Applications/Atom.app/Contents/Resources/app/src/window-event-handler.js:3:65)
[Enter steps to reproduce:]
Atom: 1.20.0 x64 Electron: 1.6.9 OS: Mac OS X 10.12.6 Thrown From: atom-panels package 0.4.1
Stack Trace
Uncaught TypeError: Cannot read property 'children' of undefined
Commands
Non-Core Packages