Simic Guildmage not working properly when moving an aura onto another aura

Player 1 had a [[Reality Acid]] attached to one of Player 2's creatures. Player 2 also had a [[Simic Guildmage]] on the battlefield. Player 2 attempted to play a [[Flowstone Embrace]] on one of Player 1's creatures, then targeted the acid with the guildmage's second ability to move the acid onto the embrace. The embrace showed up as a valid choice for Player 2 upon resolution of the ability, but when clicked, it visually bugged. Player 2 saw the acid as attached to the guildmage, while player 1 saw it as attached to a land (the top left one). This might be because it was the first permanent on that player's battlefield. Regardless, the acid didn't attach properly.

No files or tests are named. Reproduce the interaction among Reality Acid, Flowstone Embrace, and Simic Guildmage, then trace the aura-moving resolution path. Done means the moved aura attaches to the selected aura consistently for both players without visual misplacement.

Written by the indexing model from the issue text.