Can no longer even read conversations that say "This conversation is too long, please start a new one."

I have found that old conversations I had that reached the maximum length are no longer able to be read at all. It either is completely blank or it sends me back to the New Chat with a message saying “This conversation is too long, please start a new one.” This means I cannot even go back to read my old, extensive conversations that got too long. I am reporting this as a bug but it seems it has been made a deliberate function of the system. I want to go back just to enjoy reading some of my old conversations and now they are effectively lost.