These 100% worked previously and no I didn’t need the attribute points.

I always have 1 shotted, with 5.1k hammers.

I would be inclined to think that they were not supposed to, and it was calculating damage wrong previously. Im running the same hammer minus the durability and it 1 shots fine with the all stats.

that may be, however they have always worked for me since release and I have sold hundreds of thousands of gems.

Any hammer that showed 5.1k had always 1 shot for me.