Hi, I just purchased it and unfortunately encountered a serious bug. Sometimes I cannot create connections at all on some nodes. It's happened with multiple node types, restarting the editor helps sometimes but not always... no idea what causes it.
Also, would it be possible to improve the graphics quality? I love the clean design, but things look a bit pixelated on my high res display, particularly the x button, and I think the fonts could probably be more crisp. If this is made in Godot, you may need to enable "high res" in the export settings. This is how it looks at full zoom (macOS)
Otherwise, very cool app!