There was a sword that was broken, but it wasn't the one that everyone thought would break.
The crowd was filled with dwarves and they could see the difference between the two swords, so they knew that it was very likely that the glass sword would be shattered.
But when they actually clashed with each other…it was the mithril sword that was snapped in half.
When Drogath swung his mithril sword on the glass sword, there was no resistance at all from the mithril sword as it suddenly snapped in half.
The part that snapped off rebounded back at Drogath and if he hadn't reacted in time, he might have been stabbed in the face by it.
But he was able to dodge out of the way at the last second, leaving a cut on his cheek as the top half of the sword flew past and stabbed itself into the ground behind him. It fully stabbed into the hard stone floor, cutting into it like it was nothing.