This is driving me crazy.
I have a C++ BlueprintFunctionLibrary where I implemented a very simple function to reposition the application’s window.
It compiles, it works.
But.
Each f*****g time I reopen the project the function isn’t recognized - see picture.
Each time I have to first recompile then manually re-add the cursed node.
Any help really appreciated.
Does it help, if you just use Refresh Node in Right Mouse Button Context Menu instead of re-adding the node?
Thanks @herb64. I hadn’t the chance to test that. I solved the problem deleting all temporary project folders and building the VS project inside VS… 
Il try the refresh thing next time!
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It’s always important to build using the development editor configuration in visual studio, otherwise when regularly double clicking the uproject file it’s possible that not all changes have been built. The launcher uses the development editor configuration, so you need binaries for that built.
A tip:
You can enable “Force Compilation On Startup” in the editor preferences to make sure that the project builds even when opening through the launcher or the uproject file
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Thank you @zeaf. This is handy. After 30+ years of C++ development, entering UE makes me feel a total noob! 