I live in a part of the world that uses comma as decimal separator, which means my computer is set to use that as well. Parts of Lightburn (for example layer settings) respects that, parts doesn’t (for example toolbar).
I’m pretty used to software doing period as decimal separator (I’m a programmer…), but mixing them is bad. In my case, it caused me to accidentally set 1 as kerf, instead of 0.1, which made a large bunch of square holes a tiny bit too small.
My slightly unorthodox suggestion, which I use in my programs, is to simply add a text replace when I pull the value from the text box, so that it accepts both as a valid separator, regardless of settings.