VTK HDR rendering issue ?

I am trying to test VTK HDR as explained here: https://blog.kitware.com/pbrj1/

But I am always getting "red lightning" with several HDR files. Is this due to gamma value ?

HDR image: vtk-examples/src/Testing/Data/spiaggia_di_mondello_1k.hdr

HDR header:

#?RADIANCE
# Made with Adobe Photoshop
GAMMA=1
PRIMARIES=0 0 0 0 0 0 0 0
FORMAT=32-bit_rle_rgbe

Python Code:

reader = vtk.vtkHDRReader()
reader.SetFileName("image.hdr")
reader.Update()
 
texture = vtk.vtkTexture()
texture.MipmapOn()
texture.InterpolateOn()
texture.SetInputConnection(reader.GetOutputPort())
 
renderer.UseImageBasedLightingOn()
renderer.SetEnvironmentTexture(texture)

vtk-examples/src/Python/IO/HDRReader.py gives good result but it's a vtkImageViewer where we can set ColorWindow and ColorLevel