URDF Alpha Visualization - Fully Transparent

[patricknaughton01]

Klampt version: 0.10.1 (installed from pip today)
Python version: 3.8.20

When trying to set a link on the LEAP hand to be partially transparent, it becomes fully transparent.
URDF/meshes: leap.zip

Example code:

import time
import klampt
from klampt import vis

world_model = klampt.WorldModel()
robot_model = world_model.loadRobot("leap/robot.urdf")
robot_model.link("palm_lower").appearance().setColor(0.5, 0.5, 0.5, 0.5)
vis.add("world", world_model)
vis.show()
while vis.shown():
    time.sleep(0.05)

Result:

Expected result: The palm link should be translucent not transparent.

If appearance is not modified, the visualization gives:

Using robot_model.link("palm_lower").appearance().setColor(0.5, 0.5, 0.5, 1.0) gives:

[krishauser]

Should be fixed in most recent push. Let me know if this works

[patricknaughton01]

Yes, seems to be working now!

[patricknaughton01]

Seem to be having this issue again with the latest version of Klampt installed from pip (for python 3.8). Still works with commit (bbdcac2) but latest version has this same unexpected behavior.