ID 434742 - Having an Expression node linked by a Transform with an expression causes a crash

Problem summary
Having an Expression node linked by a Transform with an expression causes a crash.

Customer reported version
nuke.11.3v3

Customer reported platform
windows10

Steps to reproduce

1) In Nuke, copy/paste the following script:

set cut_paste_input [stack 0]version 12.1 v2push $cut_paste_inputTransform { translate {{x+1 x1 0} {x+1}} center {1024 778} name Transform1 selected true xpos 286 ypos -76}CheckerBoard2 { inputs 0 name CheckerBoard1 selected true xpos 140 ypos -185}Expression { channel0 {rgba.red -rgba.green -rgba.blue rgba.alpha} expr0 "(x + .5 - Transform1.translate.x(frame - ((1 - a)))) / width" channel1 {-rgba.red rgba.green -rgba.blue rgba.alpha} expr1 "(x + .5 - Transform1.translate.x(frame - ((1 - a)))) / height" name Expression1 selected true xpos 140 ypos -72}

2) View the Expression node and it's Properties bin.

3) Scrub the Max Luminance or Mix knob of the Expression node observing performance.

Expected behavior
Nuke should display the changes made for the output.

Actual behavior
Nuke crashes when making any changes to the expression node when viewing it.

Workaround
There is no available workaround at this time.

Reproduced by Support in

Nuke 12.1v2 - 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
Nune 8.0v1 - This issue appears to be in all versions of the product