iMac: Prevent windows from expanding to full screen

I have an iMac with OS Tahoe 26.1. How do I prevent open windows from expanding to full screen? I want them to stay the size I make them.

iMac (M4, 2024)

Posted on Dec 3, 2025 5:44 PM

Reply
Question marked as Top-ranking reply

Posted on Dec 3, 2025 5:49 PM

Go to System Settings > Desktop & Dock and turn off "Drag windows to menu bar to fill screen".

9 replies

Dec 20, 2025 3:58 AM in response to hajeetrom

hajeetrom wrote:

MacOS 26.2
Since a few days (since 26.2?), opening browser DuckDuckGo and Photos jump to full screen, although they were not full screen on Quit. Other application do not have this atm.
It is very annoying!!!
The solutions above did not do the trick.

With both " DuckDuckGo and Photos " totally closed using ➡️ ⌘ + Q ⬅️


Hold the Shift key >> then attempt to launch " DuckDuckGo and Photos "


This should Safe Launch each application in the last stable condition


Prevent the app from restoring a bad session


Many apps crash because they try to reopen a corrupted window/session.


Hold Shift while launching


Quit the app completely


Hold Shift


Launch the app


Keep holding Shift until it finishes opening


This tells macOS apps not to restore previous windows/state

Dec 20, 2025 7:37 AM in response to hajeetrom

While you are at this


Unless you specifically Un - Check


" Reopen windows when logging in "


Any and all Applications what were open and or Active when you Shutdown the Computer


All the Open and Running Applications will auto Launch the next time your Startup the computer


This in and of itself could the Source of the DuckDuckGo and Photos issue the computer is experiencing now

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

iMac: Prevent windows from expanding to full screen

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.