Interestingly, couple of other users experienced the same problem. I will try to pinpoint the issue but honestly, the code is so simple, I do not really understand why the buttons remain hidden.
I added keyboard shortcuts for New Object (Ctrl + W) and Edit Object (Ctrl + E). Generate (Ctrl + Enter) and Discard (Esc) were already active. Perhaps, these could help with this issue.
I forgot to check itch.io for a time -sorry about that- but yeah it works. You wouldn't believe how happy I am right now. I am better with hotkeys anyways.
I will dedicate my first world to you in honor of your dedication. Yerli ve milli bir world building programımız olması da çok iyi oldu.