Wind Waker Randomizer Version 1.10.0_92f9444
Permalink: MS4xMC4wXzkyZjk0NDQAUHVyZU5pY2VTdG9yZQD////t/8/6f2IBAQAAAAAAAAAAAA==
Seed Hash: Joel Fado
Seed: PureNiceStore
When doing a second quest/new game+/master quest playthrough, one of the possible spawn points for the Outset Island Sunken Treasure is inside the whirlpool. (I had already cleared the whirlpool in this screenshot, but I assure you it was there.)
It didn't happen in this game, but because this isn't accounted for by the logic, if e.g., Bombs are randomly generated inside that Sunken Treasure, the seed could be unbeatable.

