In the settings window, it does not open large enough to be able to view the bottom buttons for me. 1080p resolution monitor. I also cannot see a scroll bar for the logs frame.
I tested both themes, they both look very nice, the white is very white
I did notice that clicking the left button on the settings menu does not save the file tree location (can't see what it is, see my image) which I assume saves the settings and exits the editor, because thats what it does. When I click that button, restart the editor, my asset browser tree is not saved (what branches are open and what are closed) Thats a super minor bug though.
I would really like to be able to drag the different frames around to different locations to reorganize my view to how I see fit. You should look into some kind of docking framework for JavaFX, I think there are a few of them out there.