ID 385550 - LensDistortion may not enable the Solve button, even if there are enough features to solve

Problem summary

LensDistortion may not enable the Solve button, even if there are enough features to solve. 

Customer reported version
NukeX 11.3v2

Steps to reproduce

1) Open the attached .nk script.

2) Read in the attached image.

3) When the distortion model is set to '3DE4 Anamorphic, Degree 6' the LensDistortion is not able to solve.

Expected behaviour
In this example, there are 28 detected links for 20 parameters so the button should be enabled.

Alternatively, a pop-up should be displayed to tell users that there is not enough data to solve.

Actual behaviour
The Solve button stays disabled, even though there should be enough data (28 detected links for 20 parameters).

Workaround
Adding a second keyframe for detection enables the Solve button in this case.

Reproduced by support

This bug has been reproduced in:
NukeX 11.3v2 - Windows 10 - Linux CentOS 7 - macOS 10.13 (High Sierra)

NukeX 11.2v5 - Windows 10 - Linux CentOS 7 

NukeX 11.1v6 - Windows 10 - Linux CentOS 7 

NukeX 11.1v1 - Windows 10 - Linux CentOS 7 - macOS 10.13 (High Sierra)  - Regression

Unable to reproduce bug in:
NukeX 11.0v4 - Windows 10 - Linux CentOS 7 - macOS 10.13 (High Sierra)

Earliest version tested
NukeX 11.0v4
- This issue no longer appears in this version and has regressed