I'm sorry to hear about the difficulties you are experiencing.
Our system is set up such that the “Template Title” field will update automatically to reflect changes made to the “Title” field when creating similar listings *if* the contents of those two fields were the same previously.
On the other hand, if the contents of the “Title” and “Template Title” fields do not match when you make changes to the “Title” field, it is expected that the “Template Title” field would not update automatically. In that case, you would just need to update the “Template Title” field manually if desired.
I hope this explains things. If the listing you created similar from in this case did have the same details in the “Title” and “Template Title” fields, please contact our Customer Support team directly from under the “Help” tab on our site and we will look into things further.