Smalltalk springs to mind.
There are probably several other ways to do what you want to do. May be worth looking for alternatives (I came up with two in as many minutes) rather than doing the computer sciencey thing.
Humans tend to read left to right. Bubble is for humans. And isn’t a programming language.
I suspect brackets will arrive one day, and it will certainly make things easier.
So yes, you are almost certainly right from a strict perspective. It is an odd way of doing it. But that is the way it works until we get brackets.