Steps to Reproduce:

1. Cast the enchantment "Glacierwood Siege" (TDM #189) during a match.

2. Wait for the card to enter the battlefield and prompt the modal choice between "Temur" and "Sultai".

3. Try to click on either option ("Temur" or "Sultai").

Platform:
[PC / Steam]

Actual Results:
The UI becomes unresponsive upon entering the choice screen. Clicking on either "Temur" or "Sultai" does not register, freezing the game state completely. It is impossible to pass priority or take any further actions, forcing a stalemate until a player concedes or time expires.

Expected Results:
Clicking on "Temur" or "Sultai" should select the chosen mode, allow the enchantment to enter the battlefield with that mode active, and resume normal gameplay.

Workaround (if any):
None. Restarting the client does not fix the softlock once the choice screen is triggered.