The film will continue to develop during the rinse. Unless you use a stop bath but then it will affect the PH of the bleach that can be a hassle for rusing the bleach.
Originally Posted by fotoobscura
There have been a number of posts by PE in the past explaining why Blix is not ideal for C-41 process. I have also seem reports of problems using Blix in C-41 process. For some reason Tetenal C-41 kit continues to use Blix. C-41 is a proprietary process shared by Kodak and Fuji. There are reasons why it uses a bleach followed by fix. For optimal results I will use only Kodak or Fuji C-41 chemicals and follow the standard procedures to develop at 38 degree C for 3 min 15 seconds. I will bleach and fix then followed by final rinse with a Kodak final rinse chemical.