Tasks just disappears and tasks move between projects by itself.
If you could please clarify exactly what happens to cause this issue. Are you within a project view or a custom view when adding/editing a task? Are you adding a task, adding a note, changing a date?
Are you online at all times? Which browser/app are you using?
I am mostly using Chrome. I was just going over the tasks and noticed that one of them was missing. Also I noticed that some tasks were moved somehow to a different project.
I am most of the time online.
I think that I am just in the project view when I am looking at the tasks.
I remember that on one of them I changed the date and that one disappeared. I dont know about the ones that move between projects what changed.
Are you sure you are not editing these tasks at some point, maybe not accepting changes. I am not able to reproduce any issues such as this.
If you can record exactly what you are doing when this happens, that could help us reproduce it.