Channel location Plot in 3D

[deepagupta]

Description

As per the figure in this tutorial (click here), we are suppose to see figures in 3D with x, y and z axis if the channel location information is present. In my work, I have channel information in place, however, I am unable to see this important visual information in 3D as can be seen in the screenshots below:

Could this please be rectified? It may be trivial but helps for tutorials/teachings or/and source localization purposes later down the line. Thanks in advance for your kind consideration and attention.

Steps to Reproduce

1. Import data
2. Edit > Channel locations
3. Plot > Channel locations > By name followed by rotation by mouse as per the tutorial

#### Expected behavior: 3D plot showing all channel locations in a curved manner as per the tutorial: [click here](https://eeglab.org/tutorials/04_Import/Channel_Locations.html#plot-channel-location-in-3-d)

#### Actual behavior: locations are showing as if they are on a flat surface. (screenshot can be seen in the above description)
#### Versions

OS version	[windows 10 education]
Matlab version	[2023a]
EEGLAB version	[EEGLAB dev (You are using the latest version of EEGLAB.)]