The tanstack rows sit in a wrapper offset with transform: translateY(), and a
transformed ancestor becomes the sticky containing block — turn headers stuck
to the wrapper's overscan-dependent top edge instead of the scroll container,
floating over the previous turn. Offset the wrapper with padding-top instead:
identical geometry, sticky computes against the scroll container again, and
the padding only changes when the virtual window shifts, not per scroll frame.
Bohdan Triapitsyn
cc4de243c6