We are in the same area and I’m seeing something similar on my hosui pear. My hosui actually flowered for a second time last August after all the rain we had. It also broke it’s terminal buds and sent out new shoots at the same time. That new growth didn’t harden off in time and the tree experienced dieback over the winter.
I thought it might be fireblight but I don’t think it has been warm enough this spring for new infections and I haven’t seen evidence of it on any of my trees in the past couple years. I also thought it could be either psuedomonas or pear scab but from comparing images online those don’t appear to be the culprit either.
I’m leaning towards cold injury. I pruned some areas and I’m taking a wait and see approach for now or until proven otherwise.