After players found a way to use Omen's abilities to teleport outside the map, the developers announced on their Twitter account that they began to fix technical problems related to the hero. In order to prevent this bug from causing any inconvenience to anyone, it was decided to remove it from the hero pool in matchmaking.
According to preliminary and rough estimates, Riot Games will be able to fix the bug by September 4th.
The new patch will bring not only a fix for a bug related to Omen, but also several innovations. On September 1, Riot Games shared some of their plans. They want to reduce the damage dealt by Agent Killjoy's Nanoswarm, which was released on August 5, and also rebalance the weapon by reducing the effectiveness of Shorty and Judge.