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Persistent Loading Screen Bug

Sometimes, when visualizing data in the interface, the loading screen may remain visible even after the data has successfully arrived. This can cause confusion, as users may think the data is still being fetched or that the application is stuck.

Problem Description​

  • Expected Behavior: The loading screen should disappear once the data has been successfully loaded and visualized.
  • Actual Behavior: In some cases, the loading screen remains visible indefinitely, even though the data has arrived and is ready to be displayed.

Possible Causes​

  • There may be a bug in the logic that hides the loading screen after data is fetched.
  • The component responsible for hiding the loading screen may not be receiving the correct signal or state update.
  • Asynchronous operations or race conditions could prevent the loading state from being updated properly.

Troubleshooting Steps​

  1. Check Data Arrival: Use browser dev tools or logging to confirm that the data has actually arrived.
  2. Inspect State Management: Ensure that the state controlling the loading screen is updated as soon as the data is available.
  3. Review Component Logic: Make sure the component responsible for hiding the loading screen is correctly listening for data changes.
  4. Look for Errors: Check the console for any JavaScript errors that might prevent the UI from updating.

Example Video​

Below is a video demonstration of this issue: