Please tell me this is a mistake

Killer in the backs.

Munster come wide in search of space

Munster wins the lineout and roll their maul

But he wasnt at the base of the posts

Why was that try disallowed?

O'Donoghue is penalised for playing the ball on the ground, penalty Glasgow. Hogg clears to touch

It is

Surely, the base of the post is a try!

The ball is held up, scrum Munster