Description:
Elsa, "Speak" option leads to "Trade".

Reproduction:
Tell Firefly at any point that you want to sleep with Elsa (elsaisreadytofuck). Now "Speak" leads to "Trade"

Explanation:
The game checks if Elsa is ready to sleep with the MC before it checks the Speak options.

Trivia:
This might not be a direct bug. but a simple "Meet me in the evening" would give the player a better direction into what do.