Alolan Exeggutor ex is bugged

Alolan Exeggutor ex's first attack, Tropical Frenzy, works properly if you have Basic Energy in your hand to attach.

However, the attack does not work properly if you do not have Basic Energy in your hand to attach. The game will state that there are no valid cards to attach (which is correct), and it will ask you to hit a "Done" button that does not exist. You (and your opponent) are forced to wait until your turn times out. In a custom match, if you disabled turn timers, it's a forced concede.

This bug is incredibly easy to replicate and test.