Bugs have been moved to GitHub: https://github.com/openMSX/openMSX/labels/bug (for openMSX), https://github.com/openMSX/wxcatapult/labels/bug (for wxCatapult) and https://github.com/openMSX/debugger/labels/bug (for the GUI debugger).
Please use those to submit a bug report. Alternatively, contact us on IRC: #openMSX on irc.freenode.net or post on the forum http://www.msx.org/forum/semi-msx-talk/openmsx
Thanks.