The second text field is always visible -- we need to determine if it's on the first line or the second line.

50 is roughly a line and a half in height. The height can only be exactly 1 or 2 lines, so it doesn't need to be exact. This could be a problem when we add HiDPI support, though.

A better check might be to see if the top of the 2 text fields is the same, or if second field is below first field.