Description
the onDelete op observer calls releaseInstance which takes the POS mutex and can deadlock with checkIfConflictsWithOtherInstances (POS holds its mutex during calls to checkIfConflictsWithOtherInstances)
the onDelete op observer calls releaseInstance which takes the POS mutex and can deadlock with checkIfConflictsWithOtherInstances (POS holds its mutex during calls to checkIfConflictsWithOtherInstances)