With version 1.5.7
See video of issue starting at 10 second mark: http://screencast.com/t/1h7M7Gxt
The task structure may be related to this bug. See how updating a latter task's actual work changes a previous task's work for no reason.
The previous task is using Fixed Duration, not work driven, so that the work can be edited without changing the duration of the task. The latter task is using the normal work driven, fixed units settings.
It seems to recalculate the former task's work according to fixed units, effort driven even though it is not the task to be edited and does not have those settings.
This makes updating tasks and projects unfeasible with the software, as updating a task may unexpectedly change the work or date requirements of other tasks.
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