When creating a tight, small, or 2-high spawn point in my world, it teleports my players to the roof or top of the structure. The possibly new players are not able to spawn where i want them to even when teleport-safety is set to false or disabled.

Solution

1. Ensure you are using EssentialsX and not Essentials. A very big giveaway is when you type /ess reload and it displays "Essentials Reloaded Teamcity". Teamcity is the original Essentials version, the EssentialsX version will display something like "Essentials Reloaded 2.0.1b-123".
2. Open the config.yml inside the Essentials folder.
3. Find and ensure that the teleport-safety property is set to true.
4. Find or insert the force-disable-teleport-safety property to true. By default in new configuration files, this property will be present with the false value, simply change the false to true.
5. Reload essentials configuration file, either type /ess reload in-game or restart the server.