Hi, newbie here. I found an issue when using hidden connections to force placement. When using groupInheritance, hidden connections still show endpoints.
@startuml
C<|-left[hidden]->B
C<-left[hidden]-|>B
A<-left[hidden]-|>B
skinparam groupInheritance 2
@enduml
I might have posted this earlier, but was having issues with the website, so I am not sure if it got posted, since i cannot find it. I just wasn't signed in so it wasn't shown
https://forum.plantuml.net/18256/classdiagram-lines-properly-hidden-using-groupinheritance