It seems that if a player targets a token with swarm active, the target marker does not appear for the player, but it does appear for the GM that the player have marked it.
This makes it difficult for the players to know what they have targeted.
Player view
GM view
It seems that if a player targets a token with swarm active, the target marker does not appear for the player, but it does appear for the GM that the player have marked it.
This makes it difficult for the players to know what they have targeted.
Player view
GM view