Complimentary Shaders has leaves for a number of mods whitelisted, but not Ars. As a result they do not sway in the wind.

This can be fixed in the /shaders/block.properties file, by appending these entries to block.18.

ars_elemental:yellow_archwood_leaves ars_nouveau:blue_archwood_leaves ars_nouveau:purple_archwood_leaves ars_nouveau:green_archwood_leaves ars_nouveau:red_archwood_leaves

You might notice the yellow leaves are under a different mod ID for some reason.

I've not tested Complementary Reimagined, the other included shaderpack, or many other trees. I just noticed this and fixed it locally.

We cannot distribute a custom version of Complementary without a bunch of changes, this instead needs to be fixed by the Complementary dev.