Thank you for your post.
I was able to reproduce in FileMaker Pro 14.0.2 on Mac OS X 10.10.5 but not on the Windows Operating System. I started running a 15 line script, resized so that the last shown line is not completely uncovered and, when stepping into it, does not scroll down automatically to show the whole script step as it does in Windows.
You might resize the window to see the whole of the last shown line before stepping through the script as a work around.
Additionally, I have forwarded a report to Testing and Development for review. When I receive any feedback, I will let you know.
Thank you for the reply. Yes, I neglected to mention Mac OS X 10.10.5. Thank you for forwarding to T & D.
I certainly can cope with it, but I thought I ought to report it.