Trial buggeed If you blink down into the Uxmal arena before the Trial Master appears

If you do this and you don't let the Trial Master appear, then go kill the boss, the Trial gets stuck on "Enter Challenge Arena".

There doesn't appear to be a way to fix this issue. The Trial is bugged and can't recover and you lose all progression.

Why does the Trial Master need to appear for it to even start? Or why not make it so the boss won't spawn until the Trial Master appears? Stupid stipulation of the mechanic.