Because there is no support for workspaces yet, the only way to share tasks is to have two accounts configured. To prevent the other person's tasks from cluttering the view, folders can be set up as the home view, where one can nicely first select whether the task is shared or private.

So far so good (not optimal but will do).

The problem is that when one enters the shared folder and presses new task, thef folder is selected ok, but the account might be wrong (it's apparently the account created first). This is wrong because there is no folder named that on the private account! If you forget to also change the account, you end up with a ghost folder on the private account with the same name.

So: please link folder and account tightly so that only the folder that actually exists on the chosen account is visible. And when selecting a folder first, like I do, select the right account automatically based on the folder, not just the account created first add is now the case.