Thank you for your report!
I was able to reproduce this issue, although, it didn't occur for me until I set the top of the field to 1538 pixels. Did you change the height of the container field at all? Either way, this issue has been forwarded to our Quality Assurance and Development departments for further investigation. I haven't been able to find a workaround for this beyond placing the container field higher on the layout but I'll keep you posted if we're made aware of any others.