Guild Wars 2

Was playing a beta character earlier, and advanced a bit on a mastery.

Switched to a regular character, played a bit, went back to Beta Character and the Mastery tab is no longer available in Hero Panel.

Restarted client, and still not visible.

Anyone else experiencing this?

yup. disappears right after map travel

Mine disappeared when I map travelled to non beta areas, but as soon as I reentered the beta areas, it came back.