Running this model with a step size of 0.0001 works, but it fails with larger step sizes, and no error messages are generated (on [app version](https://opencor.ws/app/)) **Model runs** <img width="1512" height="774" alt="Image" src="https://github.com/user-attachments/assets/cc73194c-8e41-46d7-a4d6-3db3b3cbaed9" /> **Model doesn't run - no error message** <img width="1512" height="763" alt="Image" src="https://github.com/user-attachments/assets/0993a224-08e1-4992-878b-0a750cdc7bc9" /> [phlynx-export(57).cellml.zip](https://github.com/user-attachments/files/24954028/phlynx-export.57.cellml.zip)