I don’t know when it’s started, but if you’ve generated some Go code from a gRPC schema, and you try to cmd + click on one of the generated symbols within GoLand, instead of actually going to the Go code, you’re sent to the Protobuf schema itself.
Usually cmd + click will just take you to the code defining that symbol, and in previous versions, it did for this generated gRPC code as well. This is a recent change, and it’s… less than useful, to me at least.
Fortunately, opt + cmd + click will take you to the actual generated code.