Conference recording directory: no such file or directory

I have enabled recording on a conference, as well as one-touch recording for normal calls. Calls are recorded to /var/spool/asterisk/monitor/(year)/(month)/(day). One-touch recordings will create the year/month/day directory structure and correctly save the files, but the conference recording will fail if the year/month/day directories have not already been created.

[2012-05-11 11:29:29] WARNING[10664] file.c: Unable to open file /var/spool/asterisk/monitor/2012/05/11/conf-700-700-20120511-112919-1336757359.707.wav: No such file or directory

Permissions on the monitor directory:
drwxrwxr-x 3 asterisk asterisk 4096 May 10 13:51 monitor

I’m running FreeBPX core and everything appears up to date.

If I manually create the directory, or trigger a one-touch recording first (in the same day), then the conference recording works. It appears to me that the one-touch is properly checking for and creating the directory, and the conference recording routine is not. Is this a valid bug?