Why does clicking in a text box cause an AutoScroll panel to scroll back to the top?

Finishing up a register form in a C# application and I noticed with the panel if I enable AutoScroll and then have a textbox that is below the scroll and click on it it jumps all the way back up to the top. Is there a way to fix this with some code or is it a propriety?

It's a little difficult for me to explain it in words, so here's a short video that shows the behavior.