A task on the task list can disappear for different reasons: - Another user, which is also permitted permitted to work on this task, has already already finished it. - Someone is working on this task so so the task is blocked for all other other users until the working user rollback rollback it or his session expires. - You have already started the task in in another browser session so it is not not visible in your task list anymore. Consider that there may be multiple frontends where tasks can be started (e.g. Ivy Portal, Ivy app or custom made Workflow Uis) so it may be that your task was started from another frontend.

A task on the task list can disappear for different reasons: - Another user, which is also permitted to work on this task, has already finished it. - Someone is working on this task so the task is blocked for all other users until the working user rollback it or his session expires. - You have already started the task in another browser session so it is not visible in your task list anymore. Consider that there may be multiple frontends where tasks can be started (e.g. Ivy Portal, Ivy app or custom made Workflow Uis) so it may be that your task was started from another frontend.