Is this still so? I know that in the earlier days of `position: sticky` it didn’t play well with tables (with I think the same limitations on non-tables using `display: table` et al.), but my understanding matches https://caniuse.com/css-sticky, that Firefox’s limitation in that area has been fixed for four years, and Chromium’s for ten months.

Or as part of display: grid which also has severe quirks with position: sticky despite it being a much newer API.