Hello Britt Tucker,
Thank you for your patience and for working with us while we investigated this issue.
Based on our findings, we identified that the Azure DevOps organization was still using the legacy URL configuration. The organization was updated to use the current Azure DevOps URL configuration. This change is safe because legacy Azure DevOps URLs are automatically redirected to the current URL.
After the update, the Classic Release Pipelines that were previously experiencing intermittent loading issues opened successfully, and additional release pipelines also loaded as expected. Since then, you've confirmed that the issue is no longer occurring and that the case can be closed.
While we cannot definitively confirm that the legacy URL configuration was the root cause, the behavior has remained stable after the update.
Thank you again for your cooperation throughout the investigation. If you experience the issue again or have any other questions, please feel free to start a new thread.