The latest patch contains a possible game-breaking bug for Zerg players. For the Swarm! With the release of the much anticipated balance patch 1.1, the three races of StarCraft received a nerf to multiple units.
However when the Ultralisk was modified, they apparently goofed. Notice the SCVs:
Due to a bug in the new cleave mechanic, Ultralisks receive incredible range when attacking structures… to the point of not making sense. Blizzard thankfully is now aware of the issue and we can only hope for a quick fix before being steamrolled by the bladed monstrosities.
Ultra rush!
Source:
Battle.net Forums