Sometimes, when I open my doit.im lists (inbox, today, next etc.) on my google Chrome browser (latest version) on Windows 7, it starts to remove all the items in the list currently in view. I can later put them back from the recycle bin, but they dissapear again when I open the list they have been put back to.

This is obviously very annoying. I'm glad that it does not permanently remove the to-do's.