In this situation a probabilistic transition will occur to a cell every time-step. Whether a deterministic transition occurs will depend on what the probabilistic transitions that occur do to the state and/or age of the simulation cell. If the probabilistic transitions move the cell to another state then deterministic transitions from a state that has Probabilities > 1 will not occur. If the probabilistic transitions set the age back so that the cell can’t age to reach it’s end age then deterministic transitions will not occur.
If probabilistic transitions occur but do not set the age back then deterministic transitions can still occur. The cell will continue to age and eventually reach it’s end age and undergo a deterministic transition.