glyph scale in pvbatch

When saving a state file as a python script, if the pipeline contains glyphs, spheres in particular I have not tested with other glyph representations, if the glyph ScaleFactor = 1.0, this scale is not written to the python script. If you then run pvbatch with this python script and attempt to write an image, the glyph spheres do not show up. Presumedly they are scaled to 0 if no ScaleFactor is given.

Attached is a python state file (created with v5.8.0, and edited to include WriteImage) that illustrates this.
test_glyphs_pv5.8.0.py

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