smb.conf(5) states that the default for "default devmode" is "no". In fact the default is "yes". smb.conf(5) states that the default for "lock spin time" is "200". In fact the default is "10". smb.conf(5) states that the default for "lpq cache time" is "10". In fact the default is "30". smb.conf(5) states that the default for "printcap cache time" is "0". In fact the default is "750".
Closing the bug report as all of the reported default values have been corrected meanwhile. Thanks for reporting!