This is something that I've never understood over the years, even after reading the documentation and no one really mentions it either.

Usually when I open a project up I can add to and change the group selection on a node but then eventually it starts locking me out so if I want to bevel an edge or whatever, I can't create the node and then select the edges after the fact in the group selection, but rather, I have to select the edges and then tab into the menu and add the node while the edges are selected.

This is really a pain and I can't find a rhyme or reason to why it happens only after a project has been open for a bit.

Thanks a lot!