Yeah I was hoping some commenter would give insight into how often this sort of thing happened before Publish or Perish, vs nowadays.
I don't think we'll ever know how often this sort of thing happened pre-internet, simply because there was not the same level of access and ability to discuss and dissect publications as there is now. But there has always been pressure to publish, and publish first, for all sorts of reasons. It goes with being human (you know, that ego thing).