Null pointer exception when copying and pasting nodes and transactions onto a new graph

[GammaVel]

Prerequisites

• [X] Put an X between the brackets on this line if you have done all of the following:

  • Running the latest version of Constellation

  • Attached the Support Package via Help > Support Package

  • Checked the FAQs: https://github.com/constellation-app/constellation/wiki/FAQ

  • Checked that your issue isn’t already filed: https://github.com/constellation-app/constellation/issues

  • Checked that there is not already a module that provides the described functionality: https://github.com/constellation-app/constellation/wiki/Catalogue-of-Repositories

Description

In the latest nightly build 09/02 I am getting a Null Pointer exception for a few different graphs when I select some nodes and copy and paste them onto a new graph. This does not happen for the same graphs in v2.11 (prod release) so it looks like something has changed to cause this to happen.

Steps to Reproduce

1. Open up attached graph which is one of my data science graphs
2. Select some of the nodes on the graph
3. Use Control C to copy
4. Paste into a blank graph > run time error observed
5. Repeat with another graph that has a sphere builder component added > same error
6. Repeat with a third graph that comes from training > no error
7. Go back to v2.11 prod release > the same error doesn't appear
8. Repeat with the Edit menu to copy > there is no error using this option

Expected behaviour: no issues with copying and pasting

Actual behaviour: Error but not for all graphs

Reproduces how often: 100% on the graphs where it is an issue

Additional Information

Use the sphere graph builder to get a reproducer here.