The bug existed on controllers with a Shear and a Front Shear. It occurred due a tolerance error for the Front Shear halting the line and the Front Shear Target being the only other press.

In this configuration the software tries to treat the line as shear only to avoid the confusion for operators that a part queue can introduce. Every time the line halts the queue gets cleared unless the line stops in tolerance for the Front Shear and the operator gets asked if it is OK for the front shear to activate.

In this case the line stopped out of tolerance, but it coasted too far for the controller to queue up a new Front Shear target when entering run. This has now been resolved. If the controller has a queue target that has coasted out of tolerance the Queue will no longer be cleared. The operator will have the option to reverse the material and try the Front Shear again.