With the new Chase the Skies update, likely due to the introduction of Vibrant Visuals, all Ray Tracing resource packs only have torches & lantern emitting light, but fire, soul fire sea lanterns, glowstone, shroomlight, redstone lamps, and even lava no longer emit light. This still happens in worlds not enforcing any resource packs, worlds with no experimental options, and happens to all RTX packs & all worlds.
Campfires and lava don’t lemit light either.