So I run into this problem while using NavLinkProxy:
I have an Actor blueprint that has a ChildActor and within linked a blueprint of NavLinkProxy like so:
if I’m using simple link within NavLinkProxy with properties like this:
Everything works fine and my actor can use the proxy, as you can see in [THIS][3] video.
However if I choose, to delete simple links and use SmartLinks:
My npc encounters a problem, like [THIS][5].
Note that this happens ONLY if you use NavLinkProxy as a ChildActor in another blueprint. If I simply place them on the level everything works fine.
I was hoping that by using NavLinkProxy as child actor’s I can construct more complex exploration blueprints, with the functionality provided by smart links, however this seems to be impossible now.
Hope this gets solved soon 
T
PS. I use a simple behTree to demonstrate the issue:
You can download the project with a repro [HERE][7]
“smartlink” map has an actor with only smart link activated (so you can see reproduce the bug yourself)
“smart_n_simple” map has an actor with both smart and simple links (simple links seems to work fine)