If I am understanding you mean the input as in TS14 is not releasing or retriggering during the timer? I have tried this and it seems to be functioning correctly. I have seen the logic once and T0512 was on but the "@mov"s instruction did not complete.
However the sensor (TS14) must have cycled because the only way to get data there (and continue the chain of data) is for that sensor to see the containers, and then when it doesn't start the timer.
Apologies if I am misunderstanding what you meant.