ID 388475 - Certain Sliders are moving incorrectly

​Problem summary

Certain Sliders are moving incorrectly

This is affecting sliders that have the Xml Attribute Logarithmic=True and Attribute Logarithmic="1" 

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Customer reported version

Customer reported platform
windows10

Steps to reproduce

1) Open Mari and the Example Project

2) In the python console register the attached XML file using mari.gl_render.registerCustomNodeFromXMLFile(Name, FilePath)

3) In the node graph create the registered in step 2 custom node and open its node properties 

4) Try to adjust the Curvature slider

result: the slider is moving incorrectly

Expected behaviour
Slider to move accordingly 

Actual behaviour

Slider is moving incorrectly 

Workaround
Unknown

Reproduced by support
This bug has been reproduced in:

4.5v1 - Windows 10 - CentOS 7

4.2v1 - Windows 10

4.0v1 - Windows 10 - CentOS 7 - regression

Unable to reproduce bug in:

3.4v4 - Windows 10 - CentOS 7 

Earliest version tested
3.4v4- This issue no longer appears in this version and has regressed