This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, the Future of CSS syndicator, and the issue list on Github.
Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
scroll-snap-padding and scroll-snap-margin physical and scroll-snap-align logical makes sense because scroll-snap-align interacts with the scrollers which operate in logical direction.
mandatory and proximity will happen at the F2F, but it was agreed that the names should be improved.scroll-snap-type seemed to indicate approval of the split, but naming will wait until the F2F.