On my new character I took Elixier receiptive instead of extension as for the first two. Problem: The skill is set to unlearning so can´t be raised. The red arrow/unlearning can´t be changed by clicking as for the other skills. I do know that both skills are mutually exclusive. However I do not have the other skill learned, nor do I even fulfill the prerequisite of the other skill yet with my new character. I do not know if that is a bug or intended as I see no sense to require to learn both, to then be able to raise one of them. If they are mutually exclusive then one should be able to raise one of them even if not learning the other skill ever. On my other two characters I learned Elixier Extension and did not have that problem - I could train extension without having learned receiptive (which makes sense).
For easy reference: https://www.shroudoftheavatar.com/f...mitted-68192-cant-train-elixir-skills.164579/