BP Dialog : Short Dump when saving the Business Partner

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Symptom
From transaction BP, a user enters some data, and without saving if he tries to navigate/cancel, a pop up is thrown to the user asking whether he wishes to save the changed data or not. Irrespective of the user’s selection, a dump happens.
Other terms
LBUPA_DIALOG_JOELF44, SAPLBUPA_DIALOG_JOEL, POPUP_TO_CONFIRM, ev_answer, confirm_step, CONVT_NO_NUMBER, ‘Unable to interpret [...]