Open multiple files with Telescope

[100thFlow]

Hi, I'm new to nvim and nixos but as I know telescope can open multiple files at once without any additional setup, right? When I press TAB I can see select icon but when I press <cr> only 1 item opens.

That's my config

telescope = {
          enable = true;
          setupOpts = {
            defaults = {
              pickers = {
                find_command = ["\${pkgs.fzf}/bin/fzf"];
              };
            };
          };
          mappings = {
            buffers = "<leader>fo";
            diagnostics = "<leader>fdi";
            lspDefinitions = "<leader>fd";
            lspDocumentSymbols = "<leader>fs";
          };
        };

I tried change fzf to fd but it's does not help.

For example in that case telescope will open only "animations.conf" file.

I tried run nix run github:notashelf/nvf#maximal but still have the same problem...

[Updated] It looks like the telescope is not behaving as I expected. So I found this implementation from telescope issue #1048 which should do what I want, but how do I implement it through NVF?