The sidebar resizes, every select and checkbox is a real control, and Windows builds get their scrollbars back.
Improved
Resizable sidebar — drag it to the width you want.
Selects and checkboxes are shared controls across Settings and every tool page, instead of the browser defaults that were showing through.
Icons draw in the current text color, so they follow the button, sidebar row, or palette row they sit in.
Fixed
Windows scrollbars — release builds rendered unstyled scrollbars while macOS looked fine. Setting the standard scrollbar properties makes Chromium drop every ::-webkit-scrollbar rule; they are gone, and both engines match again.