Even if you like the new feature, please go to this adobe website and tell them to add a global “Turn it OFF” button.
The new “adjust layout” resize feature is ON BY DEFAULT. So every time you change a doc setup, change the margins, or do a couple other file modifications, the artwork is automatically scaled.
Needless to say, this adds time to production work flows (unchecking the button) and can lead to expensive sizing errors.
Please tell them to fix it by patch, not wait until the next update.