I am having the same issue in v4.0 as well. My test part is the lulzbot keychain using the stock Ultimaker 3 configuration. http://devel.lulzbot.com/TAZ/accessories/longfin/first_print/lulzbot_taz_flexydually_keychain_text.stl http://devel.lulzbot.com/TAZ/accessories/longfin/first_print/lulzbot_taz_...