Neural Network Disappears When Adding a Neuron After Running Forward Propagation

[alvaro555]

Description:

When running forward propagation in the Neural Network Define tab and then attempting to add or remove a neuron, the entire neural network disappears, leaving only a single neuron visible.

Steps to Reproduce:

1. Open Open Roberta Lab.

2. Go to the Neural Network Define tab.

3. Set up a neural network.

4. Click the button "Run forward propagation neuron by neuron" (located in the bottom-left corner).

5. After clicking the "+" or "-" button to add or remove a neuron in the neural network:

   • Expected Behavior: The neural network should maintain its structure, and a new neuron should be added or removed from the appropriate layer without affecting the rest of the network.
   • Actual Behavior: The entire neural network disappears, and only a single neuron remains visible in the workspace.

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Environment:

• Browser: Chrome Version 129.0.6668.70 (Official Build) (64-bit)
• Operating System: Ubuntu 22.04.5 LTS

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Screenshots/Logs:

[AyaMoussa]

fix can be reviewed on branch feature/Issue1697

[rbudde]

works as expected. Merged to develop