Additional line get drawn when visualizing trough pyplot

[Borzoneg]

When visualizing the robot in the pyplot environment a line get drawn from base to the tcp of the robot. I have tried both from urdf that I have and from the tutorial (https://github.com/petercorke/robotics-toolbox-python)

To Reproduce
Steps to reproduce the behavior:

import roboticstoolbox as rtb
from spatialmath import SE3

robot = ERobot.URDF(os.environ['FLUENTLY_WS_PATH'] + "/urdf/crx20ia_l.urdf", gripper="tcp")
# or 
robot = rtb.models.Panda() 

Tep = SE3.Trans(0.6, -0.3, 0.1) * SE3.OA([0, 1, 0], [0, 0, -1])
sol = robot.ik_LM(Tep)         # solve IK
q_pickup = sol[0]
qt = rtb.jtraj(robot.qr, q_pickup, 50)
robot.plot(qt.q, backend='pyplot', movie='panda1.gif')

Expected behavior
A visualization of the robot appears on screen

• roboticstoolbox-python==1.1.1
• matplotlib==3.5.1
• spatialgeometry==1.1.0
• spatialmath-python==1.1.11
• OS: Ubuntu 22.04.5
• Python version: 3.10.12