ID 441524 - Kronos displays darker when the Read node has frame range set to black

Problem summary
Kronos displays darker when the Read node has frame range set to black.

Customer reported version
nuke.12.1v3

Customer reported platform
windows10

Steps to reproduce

1) In Nuke, read in any footage.

2) Ensure the frame range is for 1 to 1, and set the frame range of the Read node to 'black'.

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3) Add an OFlow node with the Read as the Source input, set the Output speed knob to 1.

4) Add a separate Kronos node with the Read node as the Source input.

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5) Compare both the OFlow and Kronos nodes in the Viewer.

Expected behavior
The Kronos node should display the same as the OFlow node.

Actual behavior
The Kronos node displays darker when the Read node's frame range is set to 'black'.

Workaround
Adding an additional frame to the frame range changes the display of the darker image. So frame range 1 hold to 2 black works without issue. Also setting the frame range to any other setting does not display the issue.

Reproduced by Support in:

Nuke 12.1v4  - Windows 10

Nuke 12.1v1 - Windows 10

Nuke 12.0v1 - Windows 10

Nuke 11.0v1 - Windows 10

Nuke 10.0v1 - Windows 10

Nuke 9.0v1 - Windows 10

Nuke 8.0v1 - Windows 10

Earliest version tested
Nuek 8.0v1 - This issue appears to be in all versions of the product