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Mavericks resizes application windows and moves them around

This problem has started since I installed Mavericks. Typically I have Firefox and Outlook loaded most of the time, occasionally other applications such as Spotify. My wife also has an account on the iMac, so she logs in, leaving me logged in. When I switch back to my account, the applications have resized themselves to odd small sizes, and Outlook is sometimes half-way off-screen and can't be moved (if I drag it back on-screen it just snaps back to the off-screen position).


I have found a way to prevent this, and this is to ensure my wife minimises the applications first. Strangely none of her applications (Firefox, Thunderbird, iTunes) move or resize.


Certainly a bug that's arrived with Mavericks, so Apple if you're reading this please fix it.

iMac, Mac OS X (10.6.8)

Posted on Nov 2, 2013 3:25 AM

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156 replies

Nov 11, 2013 5:38 AM in response to CamberleyDaz

Yup, same here.


Have reported it to Apple and they have sent it to their engineers with a copy of a system dump they asked me to make.


Incedentaly, I created an external partition with a new instal of Mav on it and it still heppened.


Also... It happened when booting from a Mac USB instal image....


I have a copy of MLion on another external HDD and that's fine.

Nov 12, 2013 8:12 AM in response to CamberleyDaz

Same issue here. iMac 27" 2011. Colleague of mine also is affected, Macbook Pro 2012. We are both using external displays as well as the native display, if that is of any significance.



EDIT: found another thread describing the same issue here - also providing a possible solution: https://discussions.apple.com/thread/5515610?answerId=23632225022#23632225022

Nov 22, 2013 5:59 AM in response to geewizzpip

Hi Geewizzpip.


Thanks for the suggestion - for me this did not work though.


The fact that this symptom occurred whilst I was booted from a Mavericks installation USB thumb-drive, and not the internal fusion, tells me that it can only be something fundamental inside the Mavericks display drivers. Thay have definitely changed as there are 1/2 as many resolutions available.


Now to chase down that Apple repair case...

Mavericks resizes application windows and moves them around

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