drawlogooff() does not always work

[muryanto1]

I ran this in 'jupyter notebook'
`[1]: # Sample data
import requests
r = requests.get("https://cdat.llnl.gov/cdat/sample_data/clt.nc",stream=True)
with open("clt.nc","wb") as f:
for chunk in r.iter_content(chunk_size=1024):
if chunk: # filter local_filename keep-alive new chunks
f.write(chunk)

[2]: import cdms2, vcs
f = cdms2.open('clt.nc')
d = f('clt')
x = vcs.init()
x.plot(d)

[3]: # turn off log and plot again
x.drawlogooff()
x.clear()
x.plot(d)
`
I have to run cell [3] twice to see the logo really go away.