I found that Unity stores windows sizes in ~/Library/Preferences/com.unity3d.UnityEditor5.x.plist If I set correct window size it saves it, but eventually it resets all windows to size like this (573x321), If I remove the plist file or sometimes even without a reason. The problem doesn't seems to depend on Unity, Unity Hub or macOS version, full removal (as far as I could) didn't help either. It's not critical, but it's really frustrating to stretch the windows over and over again. How can I fix this? or Where does Unity get default windows size values if it couldn't find one in ~/Library/Preferences/com.unity3d.UnityEditor5.x.plist?