Torch flame particles seem to be disabled with this mod present. Provided this isn't a bug, there doesn't seem to be a config to re-enable them.

Images:

Torch with mod disabled

Torch with mod enabled
(Note: Shaders were enabled for this image, but have no bearing on the result. Shaders being off yields the same.

Uhhh.... forget what I said. Mod conflict found with Shimmer.