Don't overwrite source box nullptr with an empty box and fix z range
This broke quite a number of tests. Not sure why it didn't trigger in my last run before merging this ...
I realized this while testing !63 (merged)
Edited by Gert Wollny
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
This broke quite a number of tests. Not sure why it didn't trigger in my last run before merging this ...
I realized this while testing !63 (merged)