GitHub provides information on any outstanding bugs as well a mechanism to submit new bugs.
Prior to submitting a bug report:
-  Check the  GitHub issues-  to ensure the bug has not already been reported. 
- 
-  Check the  Forum-  and this web site to ensure it is not a usage problem. 
So after all that, if you believe you have found a bug, please proceed to submit it on GitHub.
Within reason, provide complete information about the bug:
- Describe the bug encountered 
- Describe how to recreate the bug 
- Adapter brand/name/model 
- Chipset 
- Driver used (and revision number if it comes from SVN/CVS) 
- Platform: (Linux or windows) 
- and so on, as appropriate for the problem at hand