I tried and it's true, the animations are starting from a different point, although it appears to me to be random and not reflecting what's on the screen, and I didn't mount the fans upside down. So, thank you, but I think there's still a problem.
Also, I think the dots are supposed to rotate even in real life, otherwise what would be the purpose of showing them on the actual fans too? I previously used a Lighting Node Core and I'm 99,99% sure they used to rotate. I'd really hate to disrupt my cable management to install it again, connect the fans and double check, so maybe someone else can assess this.