What is the purpose of the latching it?
Are there checks of the tag elsewhere in the program or just this rung?
If it's only this rung then the latch is useless.
If it's also other rungs then it will only get unlatched if the latch checks are true to latch it. If any of the conditions to latch go false then you will never unlatch the tag.
I have had to go over other's programs that had a stuck latched bit and add (seriously up to 30) unlatch conditions the original programmer overlooked - power off, E-stop, reset button, cycle advanced, conveyor or turntable advanced, operator manually removed a part - many conditions to unlatch