paraview 5.9

I am using the 5.9.1 version,
Issue is with the opacity option.

A soon as I reduce the opacity, the whole model sort of achieving zero opacity.
Not sure, whether it is an issue with the PV compilation.

Any help/comments will highly be appreciated.

Thanks

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Client Information:
Version: 5.9.1
VTK Version:
Qt Version: 5.12.9
vtkIdType size: 64bits
Embedded Python: On
Python Library Path: /opt/ParaView-5.9.1-MPI-Linux-Python3.8-64bit/lib/python3.8
Python Library Version: 3.8.8 (default, May 17 2021, 15:58:51) [GCC 7.3.1 20180303 (Red Hat 7.3.1-5)]
Python Numpy Support: On
Python Numpy Path: /opt/ParaView-5.9.1-MPI-Linux-Python3.8-64bit/lib/python3.8/site-packages/numpy
Python Numpy Version: 1.19.2
Python Matplotlib Support: On
Python Matplotlib Path: /opt/ParaView-5.9.1-MPI-Linux-Python3.8-64bit/lib/python3.8/site-packages/matplotlib
Python Matplotlib Version: 3.2.1
Python Testing: Off
MPI Enabled: On
Disable Registry: Off
Test Directory:
Data Directory:
OpenGL Vendor: nouveau
OpenGL Version: 4.3 (Core Profile) Mesa 18.0.5
OpenGL Renderer: NV117

Connection Information:
Remote Connection: No

Please use nvidia driver, if not possible, use mesa by using the --mesa option.

it is working …Thank you very much