Recurring task disappears
I have a recurring task that is due every second Saturday.
The task is there until due day (or possibly the day before), then it just disappears and the next due date is shown instead (that is, Saturday two weeks later).
This behavior is consistent, and happens on all platforms that I use (iOS, Gmail plugin and sometimes web).
I have another recurring task due every Sunday and Thursday, and for this task Todoist works fine.