Inlet problems?

[FrankTheTank]

I was inspecting my simulation halfway through when I noticed something weird happening to the inlets do you have any idea what is causing this?

project link : https://www.simscale.com/workbench/?pid=3989353462007021982&mi=spec%3A68936e60-21f2-4a49-93b4-675057253632%2Cservice%3ASIMULATION%2Cstrategy%3A27

thank you for your time and help,

frank lucci