Could you share the model file? There’s a chance the displacement is caused by how the GLTF was exported - if you place a mesh off-centre in Blender and export the model, the mesh will have an offset when loaded in three.
To make sure the mesh appears in the centre when loaded, move it to the (0, 0, 0) point in Blender - then select everything, and Apply > All Transforms:
sorry i dont know how to use blender, but I can tell you when I imported this glb file into blender it was not visible on screen, where as when I imported another model it looks fine. and as well Im now using this new Duck model which renders fine inside threejs. seems some issue with this GLB pysduck model
as you can see in the screenshot, the middle object at 0,0,0 is that corrupt Psyduck model, which does not render inside Blender