ID 359194 - Paint Flow Vectors is affected by toggling Scalar Data on/off with Color Management Disabled

Problem summary

Paint Flow Vectors is affected by toggling Scalar Data on/off with Color Management Disabled

Customer reported version

3.4

Customer reported platform
ubuntu

Steps to reproduce

1) Open Example Head

2) Create a new color channel

3) Disable Color Management (File > Settings)

4) Paint onto your geometry and leave the paint in the buffer

5) In the Channels Palette, under 'Color Data' toggle Scalar Data on and off
Notice: There is no change in colorspace as Color Management is disabled

6) Change your Paint Buffer Painting Mode to 'Paint Flow Vectors'

7) In the Channels Palette, under 'Color Data' toggle Scalar Data on and off
Notice: There is a visible change in the painted color
 

Workaround

Unknown.

Reproduced by support
Mari 4.1v1 - Win 7, CentOS 7.5

Mari 3.4v1 - Win 7, CentOS 7.5

Earliest version tested
Mari 4.0v4 - Last Working Version
Mari 3.3v1 - Last Working Version

Expected behaviour
Changing Scalar Data should have no affect when Color Management is disabled

Actual behaviour
Scalar Data affects the paint when Paint Flow Vector is the active Paint Mode