Steps to reproduce:

1. Open attached project "973508.zip"
2. Click on "TEST BUFFER/Add numbers" menu item

*two identical int arrays will be added with each other*
*two lines will be printed in the console: one of the input int arrays and the result of added numbers*

3. Observe the console

Actual result: when calling ComputeShader.SetBuffer twice giving the same buffer, the first StructuredBuffer will be deleted, so the result line in the console is exactly the same as the input line

ComputeShader.SetBuffer(kernel, "array_1", buffer);
ComputeShader.SetBuffer(kernel, "array_2", buffer); - at this point the StructuredBuffer "array_1" will be deleted

Not reproducible on OSX

Reproducible with: 5.6.4p3, 2017.1.2p3, 2017.2.0p4, 2017.3.0f1, 2018.1.0a7