Bug: GoRename does not work consistently

[hendrikiseke1979]

Hi, I'm not sure, if I'm missing anything, but I ran into issues when using GoRename (using vim.lsp.buf.rename works). These are the steps to reproduce:

Create a main function calling a function Foo() in some package:

Renaming the function to FooBar work out pretty well:

Renaming the function again results in an error:

Neovim: 0.9.5 go.nvim: current master