[TheThinkTank] why is the reply to list switch been changed?!?!??!

please put it back i am  getting multiple copies of list traffic and when i reply to the list  it is no longer sending the response to the list instead only to the sender   making the whole affair more tedious and potentially less open   reply all  will work  but  that leads to threads with messy piles of address  and can in some cases will result in bounces

thanks

jim