I have noticed in multiple games on both small and middle sized maps that the computer player immediately finds the grail. It seems as if some flag has been corrupted, possibly if they examine one obelisk they know where it is, but I have seen neighboring computer players get the grail in the first few days when I have 2 or 3 obelisks they have not seen yet.

You should post it in game's specific forum.
I have no idea what are you talking about ;)
This is general forum

Sounds like Heroes of Might & Magic but I wasn't aware of any update in any game in this series.

Well, let them keep the grail. What does it pertain to us?

Perhaps it allows the wizard to destroy the town...? Then what?

Let's just hope they choose poorly.

Man, I really NEED to rewatch Monty Python and the Holy Grail. I couldn't come up with a single appropriate quote :(

Worry not, I've come to the rescue with this (I believe) fitting quote:

“Help! Help! I’m being repressed! Come see the violence inherent in the system! Violence inherent in the system!”

;)

https://youtu.be/YgX_Q7wz0GQ

Great quote hahahaha.
BTW I think maybe OP's problem could be that while the computer is going after the REAL Grail the OP is, ahem, ... delayed ... at the convent. Helping the virgins, of course. Awesome voice, and a very funny scene. Now I wish I could watch Spamalot live. Thanks for sharing.