they did not nerf RDM, except for these exploits/bugs that were removed.

An issue wherein the hotbar icon would still look like the conditions for activating the Red Mage actions Verflare and Verholy were fulfilled even if the combo was canceled by performing another action.
An issue wherein the effects of the Red Mage ability Acceleration would apply to Verflare and Verholy.
An issue wherein the amount of black mana and white mana consumed would be incorrect when performing some of the Red Mage actions under certain conditions.
An issue wherein the Red Mage would start content with white mana remaining when queuing for content under certain conditions.