I tried removing rune, removing legendary gear, armory still showing me rune available (3) unlocked (4).
For some reason In 2nd equipment slot everything is working fine.
I tried dying other glider and then switch back to previous one. weirdly doing that fixed it.I can dye my glider fine now. Thank you for trying to help.
When I dye Etherbound Glider skin applying doesn't save those dyes, other gliders work fine.for some reason this is just happening to one of my characters.