In 4.9.1, but problem has been present since 4.7.x as I remember.
Essentially, box trace doesn’t register a hit in places where it definitely seems like it should, for example, in this image: http://i.imgur.com/f8EMXhm.png you can see that the object (which is a full pyramid surrounded by box collision + is being traced with the following settings http://i.imgur.com/hwiNYWG.png that encompass the entire pyramid) is clearly clipping through the wall, and should be identified as a place where collision is occurring.
Yes, as expected, I was able to solve this by taking the normal from the hit result, breaking the vector, and checking to see if the Z value of the normal was >= .990 (a somewhat arbitrary value that suited my needs). If it was not >= .990 I prevented a spawn from being called. There are still some oddities I’m experiencing with the box trace such as follows http://i.imgur.com/83llEQ4.png. I’ll try and figure something out for it but so I don’t infringe on Epic’s tracking systems I’ll mark this resolved since my original problem is fixed.
