A user found a bug in one of my apps and I fixed it. It was in my core code and the fix worked in the Debug version but I found that when I built the Release the fix wasn't there. I had to do a Rebuild of the Solution to get it included. This is not the behavior I expected and seems to be a bug. Why would it get built in the Debug but NOT the Release? This was with version 15.6.2 of Visual Studio 2017 and effected both the Android and UWP builds using PCL.