Functions in subfolders are not reloaded

Inside the function-folder theres a 'main-function' and a subfolder called 'summon'. Inside the summon-folder theres another function.

I expect the changes in the second function to be updated in game by '/reload'

But only changes in the main-function are loaded.
This must have worked in the last snapshot because the game recognises and executes the function as usual but I can't change it anymore.