Hey mdonge-
Could you clarify a few things to help me test the issue you’re reporting. What exactly do you mean by a Cpp library? Are you adding a new class based on Actor/Character/GameMode/etc.? What functions/code did you add to the code class? When preforming the hot reload, are you compiling from Visual Studio or using the in-editor compile button? Let me know if there is any other information you can provide that will help me reproduce the bug locally.
Cheers