streamlinesRepresentation plugin issue

When using StreamlinesRepresentation plugin in 5.8, the “line thickness” and “render as tubes” properties disappear, however it still is present and can be changed when representation is changed back to surface, then back again to streamlines representation.

Steps to reproduce:

Activate streamlinesRepresentation plugin
change representation to stream lines
Try and change line width > non existent property in 5.8

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