There is no doubt the pens / working facilities need to be very stout. Don't recommend using a cattle head chute for bison. Crowding pens should be at least 7' tall.
The problems talked about in this thread are more a result of people not understanding how to work them. You can't work them like cattle. If someone knows what they are doing, they are not a problem at all.
I help a producer near College Station work about 75 head - calves, yearlings, cows, and mature bulls - in less than two hours. Vaccinate, worm, tag,and weigh. No issues whatsoever.
My 40 can be worked with same procedures in about an hour and a half.
Have to be very quiet, low stress, crowded areas lined with tarps.
They really are not that bad.