« Reply #17 on: June 13, 2015, 01:00:27 PM »
The maximum sig height was 20em, but that was awkward since em is a relative unit, so I've changed it to 200px (which is slightly shorter).
Images are resized to have a height of 200px if they are taller than that. Then, the bottom of the entire sig is cut off if its height exceeds 200px.
If you remove the text, your image should look right.
Basically, it's working as designed.