Task list inconsistency

For the applications that we have built, we get an occasional issue where the task list is inconsistent with the following expected state: a user has just completed and submitted/rejected a task, then the next page that appears is the user's task list, which contains the task that was just completed.
Today, one of our testers managed to reproduce this scenario several times. At one stage, the Tasks link in Tempo showed that there was no tasks (no number shown inside brackets next to the 'Tasks' heading/link), but then a task appeared on that page.

Is there anything that can be done to stop this inconsistency from occurring?
(It seems to be caused by Tempo reading the task list information before it's been updated by the process execution engine.)

OriginalPostID-252060