https://bugzilla.mozilla.org/show_bug.cgi?id=930331
930331 - feComponentTransfer /feFuncA results in visible banding
UNCONFIRMED (nobody) in Core - SVG. Last updated 2022-10-11.
in visibleresultsbanding
https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Element/feFuncA
feFuncA - SVG | MDN
svgmdn