I took an English AP test yesterday. They give you three options for submitting your essay: Upload a picture, upload a text document (.doc, .pdf and a couple others) or paste your essay into a text field. Strangely, there was no option to type directly into the webpage.
I struggle with writing quickly, so I made the (rather poor) decision to continue writing up until about 20 seconds remained. I pasted my response and clicked submit with about 10 seconds left. The timer continued to count down and I was panicked because the submission was still loading. It finally went through with only 3 seconds remaining.