My system is a one-to-one school with iPads, so students predominately do their coding on their iPads. This isn't ideal, but works pretty well with coderunner in Moodle.
However, we have run in to an issue where when a student clicks back in to their code after checking it to make a correction, the cursor changes to a typeover, which makes making changes to the code very difficult. This happens in Safari and Chrome apps, so it doesn't seem to be a browser issue. Does anyone know of a setting I might find that would help with this?