Fix window position autosave

CHANGELOG.md

@@ -2,6 +2,15 @@
 Change Log
 ==========================
 
+develop
+--------------------------
+
+### Fixes
+
+- [beta] Fix an issue where initial window position was not stored.
+
+
+
 3.0.0-beta.2 (144)
 --------------------------
 

CotEditor/Sources/DocumentWindowController.swift

@@ -70,6 +70,7 @@ final class DocumentWindowController: NSWindowController {
         
         // -> It's set as false by default if the window controller was invoked from a storyboard.
         self.shouldCascadeWindows = true
+        self.window?.setFrameAutosaveName("document")
         
         let window = self.window as! AlphaWindow