Did Power Struggle get changed or has it always been this way?

As the title states, I'm wondering if power struggle has been changed?

I've been under a pallet, used power struggle and the killer has dodged the pallet (but the pallet dropped)?

I've used power struggle many times before and this has never happened, but today...it's happened 4 times?

Is this a bug, an intended change, or has it always been this?

Thanks for any info.

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