So with my building my base im running into the issue where not all wood blocks can be upgraded. I decided to live in one of the tiny barns and was fixing up the roof. The roof has a nice slope in it. I can replace the missing blocks, but unfortunally the game doesnt allow me to upgrade whatsoever. Considering my horde build is right next to it, a wooden roof isnt going to cut it long term. The same thing happened when i added some small wooden corners to my build. I can place them in wood but can't upgrade them at all.
Is this still missing from the game and still needs to be added to it? Or am i missing something completely and just doing wrong? I looked through some of the other blocks, the metal, rebar frames. But i couldnt find them in there.