Board Thread:Player Suggestions/@comment-27039577-20151003000928/@comment-3157150-20151231020413

I can tell you with certainty that there is no code within the game pertaining to any events being prevented by items. There is however, instances where events can prevent other events.

But in the case of items causing the prevention? No. That's a case of uncommon RNG on your part. Similar to how one player might get the Meowmere on their first kill of the Moon Lord, while another might have to kill it 100 times or more.