The " Gift of the Ox " Brewmaster talent has been removed from the spellbook since many months now, despite it being a passive you learn in the tree (so it is a bug that it is not showing anymore in the spellbook).
BUT due to this talent being invisible now, I am stuck with the " grace of yulon " glyph on it and am unable to ever remove this glyph which is causing me some visual annoyance, the sphere being to transparent and not eye-catching enough for me.
It does show in the talent tree it has the glyph, but vanishing powder does not work on talent tree, only on spellbook.
Which means I am stuck with the glyph forever now or until the passive comes back in spellbook.