Sekhema Relic Doubles Keys at 100% chance

I found a relic in the Trial that has a "10% chance for any key you pick up to be duplicated", but I believe the chance is mistakenly 100%. It seems that with this relic in the trial keys picked up from monsters or as room rewards always award 2 keys instead.

Just bumping this as I can confirm this is happening. This is with *any* chance of extra key by the way.

If I had my bet there's a very tiny typo in the math converting the whole % number to an actual percentage (5% -> 0.05) where someone is dividing by 1 instead of 100. Seems like the most straightforward way to accidently have this happen.