Some features do not work when path contains unicode characters

[lucasvreis]

I'm using dotnet SDK on linux and I can reproduce the issue in both VSCode with Ionide and Emacs with lsp-mode.

Steps to reproduce: in a shell,

mkdir código
cd código
dotnet new console -lang f#

Then open Program.fs in VSCode and write something invalid. The error is not shown in the editor area. Many other features also stop working.

Errors are still shown in the "problems" panel. But when you click them, you get Unable to open 'Program.fs': Unable to read file /home/Lucas/c%F3digo/Program.fs, Unable to resolve non-existing file, etc.