As @Steve-Mcl has suggested quite a lot of times, you can use a Debug node throughout your flow to figure out what is happening to the messages. You have not acknowledged that advice yet ask us for what could be happening in your flows.
We cannot tell anything from a screenshot with no information about what those Function nodes currently contain.
If you wanted to share some actual details, then make sure you read this post first on how to properly share code in the forum - How to share code or flow json
