OS specific properties in Tasks.json to overwrite build shell doen't work

- VSCode Version: 1.39.2 - OS Version: Windows 10 Steps to Reproduce: 1. Set default shell to `bash` so your build tasks fails as VSCode recently started passing incorrect build path to `bash` 2. Set a build shell which is different than default as you want to build your TypeScript project. `powershell` works. ```JSONC { // See https://go.microsoft.com/fwlink/?LinkId=733558 // for the documentation about the tasks.json format "version": "2.0.0", "windows": { // this is the only place where VSCode allows to add `windows` "options": { "shell": { "executable": "C:/Windows/System32/WindowsPowershell/v1.0/powershell.exe" } } }, "tasks": [ ``` 3. Run build and see that it is using original shell, not one defined in `.vscode\tasks.json` Does this issue occur when all extensions are disabled?: Yes Options to add `windows:{options:shell:{executable:{"......"}}}` is available in VSCode for all Windows, OSX and Linux, however it doesn't affect build task on Windows: