Artillery can no longer kill spawners in a single shot, can you fix this?

I was in 0.16.3 when the bug happened but now testing it again 0.16.5 seems to have fixed it.

I had the train stopped at s station with a fast inserter loading directly into the wagon.

I noticed that inserters can insert into artillery turrets but not into artillery trains. I have also tried inserting form every side but they refuse to insert into artillery wagons for me.