<!-- Please search existing issues to avoid creating duplicates. --> <!-- Also please test using the latest insiders build to make sure your issue has not already been fixed: https://code.visualstudio.com/insiders/ --> <!-- Use Help > Report Issue to prefill these. --> - VSCode Version: 1.37.0-insider - OS Version: OSX 10.14.4 Steps to Reproduce: 1. Open preference, edit proxy, enter an IPv6 address. 2.  <!-- Launch with `code --disable-extensions` to check. --> Does this issue occur when all extensions are disabled?: Yes