This is in beta anyway, so please if you see any bug tell me and I'll do my best to fix them (Though some bugs aren't fix-eable due to the natural behavior of the incompatibility between both MC versions).
AND REMEMBER! THIS IS A COMPATIBILITY UPDATE, NOT A FULL 1.9 UPDATE! This means the purpose of this update is only to let both 1.8 and 1.9 clients to connect the Server, but all 1.9 blocks and features will be disabled and everything will be like if it was 1.8 (Yeah, PvP is exactly the same). Full 1.9 update will take a considerable bigger amount time and won't come out probably til a few months