Hello,
When we place water with a bucket, if there is a bloc next to it then it destroy that one, and the bucket is changing place on the inventory..

Thanks

Do you mean placing water in a cauldron?
I have tried and no blocks are destroyed. Maybe could you do a video?

No use the water on the cauldron is fine
There is a video :
https://drive.google.com/open?id=1afDN0o4TjpTn2OTlLnPDLpzEAQWX5pJa

I cant see Brewery in the plugin list.
The problem is very likely the plugin ItemStackReloaded