This issue is very difficult to reproduce, so there's no reliable way to test it without modifying the code. It's best to use a very large course and use an emulator set with a low network bandwidth so the app loads content slower. At least we need to test the fix does not introduce any regression. Add a URL module at the top of  a  course, with the "Display" setting set to "Open" Access the course in the app, and open the URL module immediately, before the link button has loaded on the right hand side Check that the links is opened in the system browser