Omen & Delirium Splinters Going to the wrong box

Hi everyone

I have noticed that all of my Omen & Delirium Splinters are consistently going to the boxes meant for Tablets & Ultimatums even though I have checked the boxes in their respective Stash page.

From my understanding, splinters are considered both Fragments and Omen/Delirium respectively but their priorities (in terms of ending up to the right Stash) are a bit mixed up.

Thanks in advance!