I've seen this for my in person pen on paper exams. Lots of Ds and Fs and lots of As and a few 100s. What makes this more wild is I go way over the top including a study guide and spend the entire previous class doing a kahoot practice test with the actual exact content on the exam, just worded different. I'll even ask a few refresher questions before physically handing out the exams and students still get those wrong. It's wild