Comment by laurentlb

It's VSCode, so it's 90% similar to https://vscode.dev There are internal extensions, but they don't dramatically change the look and feel.

I think many VSCode users are not familiar with the Comments UI, but it's used in e.g. the "GitHub Pull Requests" extension. Apart from that, some changes in the list of directories/files (for performance reasons) and a redesigned SCM integration.