macOS Tahoe apps reopen maximized, ignoring previous size

fmcarvalho wrote:

On macOS Tahoe, applications (e.g. Mail and Calendar) reopen their windows in a “fill window” / maximized state rather than restoring the last used window size and position.

Steps to reproduce1.

Open an application.

2. Resize the window to a custom (non-maximized) size.

3. Close the application window.

4. Reopen the application.

Expected behavior

The window should reopen with the same size and position it had when it was closed.

Actual behavior

The window reopens maximized (fills the screen), ignoring the previous window dimensions.

Impact

This breaks window layout workflows and requires manual resizing every time an app is reopened. Annoying

Notes

Happens consistently after reopening apps. Seems independent of Stage Manager / full screen usage. No obvious system setting found to disable this behavior. Annoying

With the Application Open, resized to what you want and in focus

⌘ q the application

This will make sure the application is completely closed and not running in the background

Maneuver to that same application

Hold the Shift key and launch the application

It should launch the application in the Last Safe State

As an aside

Running 3 different M-Class computers all with macOS 26.2 Tahoe

Any application I have customize the Size of the application, alway re-opens in the same size windows as when I closed the application

If does doe not work on your computer

This would seem localized and unique to your computer

I don’t have the close windows option set, but don’t imagine that would be it.

There might be something interfering with the writing of the last used window size. When you resize and close, make sure there are no other document windows open in the app.

Maybe restart in Safe mode, then restart normally.

I’ve never had that issue. Maybe it is Window Tiling. Do you have those options disabled on System Settings?