Good job on the improvements !
Here's some observations, mostly usability related, after 15 min or so playing with the UI:
- fonts are blurry with game resolution set at 4K on a 4K monitor.
As if the UI was rendered at a lower resolution and upscaled. This makes everything looks low res and not as sharp as it could be. Windows scaling is set at 200% but this does not change if scaling is disabled (100%). This blurryness is really jarring
- blinding white backgrounds are not ideal, especially in a low lit room. Please add an optional 'dark mode'.
- Please remove the slow fading between pages. This just make the UI feel much slower.
I know web designers love transitions and fancy effects, but please refrain from it or make then much faster and less in-your-face. Also, combined with the white background, fading is very unpleasant. And it seems sluggish and not operate at a fast framerate...
- design requiring horizontal scrolling because everything does not fit on the page is not great. I would get rid of it, which would also make these edge red arrow not needed anymore. I think they clutter the design, making it more busy than necessary. Speaking of horinzontal scrolling, in the Settings top page, Bug: clicking the right button to scroll and go to the plugins page does not scroll the bottom section.
- dragging scrollbars in lists do not work well, as scrolling stops as soon as the mouse
gets out of the scrollbar area, which is very easy. Scroll wheel works fine.
- I would really really like to have support for mouse back button to go to previous page, like in your regular web browser. This would help so much to go back to the previous page without having to hit the red arrow at the top-left corner
- quick exit game with ALT+F4 from anywhere would be nice