Apple apps go to full screen when moved on Mac after Sequoia 15.6.1 upgrade

Peter J. Levy wrote:

on Mac, after upgrade to Sequoia 15.6.1, Apple Apps go to full screen when moved. Even though all the tiling options are disabled.

This happens on Safari, Mail and Calendar.

[Edited by Moderator]

Have you shut down and restarted more than once since your "upgrade to Sequoia 15.6.1"...(?)

fill screen or "full screen"... two different things

no resolve—

A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

ref:

View open windows and spaces in Mission Control on Mac