Thanks. Since you were able to replicate the problem then I am going to try to stop "fixing" it.
Your idea of removing the ending and doing the "Hold..." does result in a final strum. I can bring this into my Logic Pro X session and edit this in for an ending.
I hope that a PB engineer will take a look at this and let me (us) know if this problem is only with this particular style and if related to coding in BIAB v.2016.0.127.
I am going to fire up my old Mac with Snow Leopard later and see if this problem occurs in BIAB 2015.