I also used to get this issue, especially when saving a css/scss file with an error, as ts/tsx files would recover most of the time. To workaround that, I now use the recently released feature of VSC which disables auto-save on a file with an error (look for auto save no error in the settings panel). It will only save it if you use the shortcut or the menu to do so. I've never got stuck again since then.