ID 447814 - DeepMerge node hides inf/infinite samples when the drop hidden samples/drop_hidden knob is enabled

Problem summary
DeepMerge node hides inf/infinite samples when the drop hidden samples/drop_hidden knob is enabled

Customer reported version
nuke.12.2v1

Customer reported platform
centos7

Steps to reproduce

1) Open Nuke and paste the below script

ColorWheel {
 inputs 0
 gamma 0.45
 name ColorWheel1
 xpos -35
 ypos -181
}
DeepFromImage {
 set_z true
 name DeepFromImage1
 xpos -35
 ypos -109
}
set N4ba9f800 [stack 0]
CheckerBoard2 {
 inputs 0
 name CheckerBoard1
 xpos 129
 ypos -181
}
DeepFromImage {
 set_z true
 z inf
 name DeepFromImage2
 xpos 129
 ypos -109
}
set N4ba9f000 [stack 0]
DeepMerge2 {
 inputs 2
 drop_hidden true
 name DeepMerge1
 xpos -35
 ypos -9
}
push $N4ba9f800
push $N4ba9f000
DeepMerge {
 inputs 2
 drop_hidden true
 name DeepMerge2
 xpos 129
 ypos -15
}

2) View the DeepMerge nodes, notice the CheckerBoard background is not visible

3) If you disable drop hidden samples on the DeepMerge node, the Checkerboard becomes visible

*Happens in both the DeepMerge and DeepMerge2 nodes

Expected behaviour
For the visible samples to remain visible

Actual behaviour
They are hidden

Workaround
Unknown.

Reproduced by support
This bug has been reproduced in:

Nuke 12.2v2 - Windows 10, CentOS 7.7, macOS 10.14

Nuke 12.0v1 - Windows 10

Nuke 11.0v1 - Windows 10

Nuke 10.0v1 - Windows 10

Nuke 9.0v1 - Windows 10, CentOS 7.7, macOS 10.14

Earliest version tested
Nuke 9.0v1 - This issue appears to be in all versions of the product