Bug? Recurring task with subtask won't allow me to mark it done
I have a task that is set to recur monthly. When I try to tick the box against this monthly task, it shows the busy symbol but never completes.
I am not having problems getting other tasks to mark completed, including recurring tasks. I have tried refreshing the page. I have tried ticking this box both on the 'today' page and also within the project where it exists, so I'm sure it's not a browser / connectivity issue. I have also been able to mark other tasks completed after I discovered this issue, so I don't have a wider problem marking tasks done.
What distinguishes this particular recurring task is that this month I gave it a subtask. That subtask is already marked as done. Is there a bug that means recurring tasks can't be marked complete if they have a subtask?