I've been installing/uninstalling apps, and tinkering with the phone's many features here and there, and one annoyance I've found is that sometimes when I go to the App Drawer / App Tray, the icons are in different places from the last time. There seems to be no rhyme or reason to this random change of icon positions. Is this the expected behavior of all Android phones (regarding the app drawer)? Is there is a fix for this? Can I somehow manually rearrange the icons in the drawer and have it stay fixed?