Is the Eternal D6 supposed to be a trinket...?

So I recently found out that the Eternal D6 can be a trinket, although this never happened to me before, ever. Platinum God doesn't have a mention of it, which makes me that more confused. Here is some proof.

i literally just wanted to do delirium with lazarus 🥺

Any thoughts, or has anyone seen anything like this? (maybe someone finally fixed the cracked dice 🔥🔥🔥)