Unity 2019.2 LWRP broke

Hi ! I have some problems with Unity 2019.2 Light weight render pipeline…
I create a terrain and I add grass , but the grass is broken idk…
136376-2019-04-13.png

And the second question is :
I create a water using shader… but when i make the material transparent…a wird glitch appear…

136375-2019-04-13-10.png


this is the shader graph for water