Hey!
If you restart the editor im sure editor will try to compile and when you have compile error that should be appaer when you try to play (or even when editor is loaded)
I dont know working solution to recompile all blueprint (there was a feature request once) just one workaround for blueprints
if i remember right you can filter the whole content for blueprints then right click asset action reload maybe? 
Let me know if it works