I was trying to Abra for a pet today and there were several times where I used Abra and nothing happened. I read something a while ago about abra taming being disabled, but I just brushed it off as hearsay.
But since I used so many yellow gems that I managed to Class Change the succubus (which does indeed have an existing egg) into Ghostring, Ktullanux, Mistress, AND Baphomet without getting a single Taming Monster, it kinda makes me wonder. I asked Schro GM Farnsworth today, but he didn't know.
If there was some sort of GM post about it that someone has seen, could they try to find it? I haven't actually seen anything official. ._.;