Dragging windows jump to full screen

Hey there Michael Kemper,

Let's see if the info included here helps out: Manage app windows on Mac. We'd suggest going through each section to see if the settings will help you out including the following:

• "Maximize a window: Press and hold the Option key while you click the green button  in the top-left corner of an app window. To return to the previous window size, Option-click the button again.

You can also double-click an app’s title bar to maximize the window (as long as the option to do so is set to “zoom” in Dock & Menu Bar preferences)."

This is found in the guide too. As a suggestion, try this out to see if it will resolve your issue.

Let us know if this helps.

Kind regards.

It looks like you may have installed some third party window manager software, as the behavior you describe is not standard in macOS.