Rapacious Vermin if items / abilities cleared from board, no Sustain penalty

[Storknest]

If a board is cleared of items and / or abilities that were on it, the Sustain penalty of Rapacious Vermin does not kick in.

In this image, I would have expected my non-disabled Vermin to penalize me 1 HP every turn of mine ending but nothing happened.

Bug - R Verm no penalty.jpg

[Shadow Era]

I see an attachment on an ally there, which counts as an ability. On the card it is shown as "Ability - Attachment" which means they have type of Ability and subtype of Attachment.