Window moved after wake up from sleep
Unless you have some window manager that's causing this, it might be a transient thing where the external displays disconnect and windows all collect.

There are some nice window managers that let you automate fixing things so I'll mention them in case no one can confirm this is a specific bug or steps to control for this like ejecting all the displays or preventing sleep.


Is there a way to exactly position a window?
How to move windows on Mac as in windows from keyboard?
Move windows around a desktop -- and to different desktops -- using only the keyboard?
Window management app on mac os x?