The setting you are looking for can be done graphically in dconf-editor, navigating to /org/gnome/shell/overrides and toggling the value edge-tiling, as appears below:
What the Heck is –Mark–? Learn Linux Logging
You hear it all the time: Monitor your logs. When there is a problem, check the logs. And it’s good advice, because system and application logs tell you anything you need to know, provided you actually look at them and