Yeah, I´d say that the Layout isn't a problem at all. The thing is the pixelated theme i guess.. but you did a really good work here.
I'm using Ubuntu, the Appimage simply doesn´t run as if it wasn't an appimage, I don't understand the technical aspects so I can't help with that. But is not a big deal to me 'cause that Love2D IDE (you can find it here on Itch.io) assisted with running Weaver Editor.