Assigning visible=false affects the wrong object

[ShadSterling]

In the following code, a.visible = False affects b:

#!/usr/bin/python

from __future__ import print_function, division
from visual import *
import time

a = sphere( pos=(-1,0,0) )
b = sphere( pos=(1,0,0) )

time.sleep( 1 )
a.opacity = .75
time.sleep( 1 )
a.opacity = 1
time.sleep( 1 )
a.visible = False
time.sleep( 1 )
a.color = color.red

[BruceSherwood]

This is quite amazing, and not a previously known bug. Here's an even simpler scheme:

a = sphere( pos=(-1,0,0) )
b = sphere( pos=(1,0,0) )

a.opacity = 0.5
scene.mouse.getclick()
a.opacity = 1 # if this is less than 1, no bug (it is object a that becomes invisible)
a.visible = False

Thanks for the report.