I chose Herald of the Sun while levelling as Ret and I noticed that my Word of Glory has not been replaced despite having the talent selected.
In fact, the Spellbook has both spells listed as available for use.
However, if I cast Word of Glory, I still appear to get the Eternal Flame HoT.
Anyone else experience this and / or know what is going on here? 
The tooltip doesn’t always switch but it’ll always be eternal flame.
But if Word of Glory is replaced by Eternal Flame…why do I have BOTH Word of Glory AND Eternal Flame in the Spellbook at the same time, both useable abilities? 
Didn’t pay that much attention to that personnaly.
I saw the icon bug but once I used it and it gave eternal flame, I just figured it was a bug and went on with my day.
You should try both when it happens and see what gives.
OK so can someone clarify
I too see both icons, however flame is never able to be activated, only wog.
So wog if pushed will function as flame?
Yeah , at least that’s what it does for me.
I get the HoT from it.
They are still listed as two separate spells for me also. Have both, and both usable, on my hotbar.
This is for Ret, and nowhere in the tooltip does it list as one replacing the other.
Regarldess of which you use you’ll get the eternal flame, it’s just a visual bug.