hello. first sorry for my English if there is some mistakes.. not my native language.

so the bug is that the rain drop particles for some reason not drop on all the blocks. as you can see from the video i added that it wont drop on the grass/wood blocks while on send you see the drop. and when you check the sky same thing happens where there is sand you can see above you the rain but on grass you can't
http://www.youtube.com/watch?v=euPDPIPWOKQ

my full sys info:
http://bezo.in/paste/index.php?6gxlom0731lr9u5