I recently made a game with a first person controller and when i test it the player goes to the corner of the map and when i jump somewhere it teleports the player back.
Do you have a script attached which set the player position to that position in the scene?
Usually when you create a new scene and add the FirstPersonController prefab from the standard unity assets, it should work fine. Just drag and drop into your scene hierarchy, set the Y position high enough so it doesn’t fall trough the floor and press play. You can now wander around and view your scene.
Sounds like you’re doing the jump in world space, so you’re resetting the character back to (0,0,0) again.