Fix edge-case which could cause session-restore to fail

Author: pfrazee

app/bg/ui/session-watcher.js

@@ -117,7 +117,7 @@ class WindowWatcher extends EventEmitter {
     this.handleAlwaysOnTopChanged = this.handleAlwaysOnTopChanged.bind(this)
 
     // right now this class trusts that the initial state is correctly formed by this point
-    this.snapshot = initialState
+    this.snapshot = JSON.parse(JSON.stringify(initialState))
     this.winId = win.id
     win.on('closed', this.handleClosed)
     win.on('resize', debounce(this.handlePositionChange, 1000))

app/bg/ui/windows.js

@@ -218,7 +218,7 @@ export function createShellWindow (windowState, createOpts = {dontInitPages: fal
   }, frameSettings))
   win.once('ready-to-show', () => {
     win.show()
-    updateWindowToolbar(win)
+    updateWindowToolbar()
     if (!hasFirstWindowLoaded) {
       hasFirstWindowLoaded = true
       app.emit('custom-ready-to-show')