Auto-scheduling on issues with dependency conflicts but no estimates are not rescheduled

Issue Summary

Auto-scheduling only considers issues with estimates. However, when inter-dependant issues have manually been assigned dates that conflict (i.e. the issue B depends on issue A but issue B has been scheduled to start before issue A has completed) the auto-schedule algorithm does not adjust those dates if the issues do not have estimates.

Steps to Reproduce

1. Create a plan
2. Create Issue A
3. Create Issue B
4. Make Issue B depend on Issue A
5. Set start and end dates on both issues so that Issue B is scheduled to start before Issue A is scheduled to end
6. Ensure that no estimates are set on either issue
7. Run auto-schedule

Expected Results

The scheduling algorithm should recognise the dependency and conflicting dates and adjust them accordingly.

Actual Results

The dates for the issues are not changed

Workaround

Add estimates to the issues.