Hello, not sure if there are any other classes that have similar issues but the druid LFR set for Nerub-ar Palace is missing its mythic alternative pieces (the ones you get after using the Luminous Nerubian Catalyst Stone).
Also something minor but similar: the priest shoulder and helmet mythic variants for the LFR color also seem to have a different animation than the rest. It almost looks like it was a WIP that was scrapped in favor of the current mythic glows. I personally like it because the animation feels more angelic than the energy flow that the shoulders currently have