<!-- Please note that this template is not optional. Please fill out _ALL_ fields, or your issue may be closed as "invalid." Please do not delete this template. Please ask questions on StackOverflow or Gitter (https://gitter.im/webpack/webpack). General questions, how-to questions, and support requests will be closed. --> * Operating System: Ubuntu 18.04 * Node Version: v10.11.0 * NPM Version: 6.4.1 * webpack Version: 4.20.2 * webpack-dev-server Version: 3.1.9 <!-- Please place an x, no spaces, in all [ ] that apply Please note that we are NOT accepting FEATURE requests at this time. --> - [x] This is a **bug** - [ ] This is a **modification** request ### Code You can check out this [barebones repo](https://github.com/aryzing/reproducing-WDS-no-broswer-open) reproducing the issue. The WDS is using via it's Node API with `open: true`. ### Expected Behavior Browser tab should open ### Actual Behavior No browser tab is opened ### For Bugs; How can we reproduce the behavior? You can check out this [barebones repo](https://github.com/aryzing/reproducing-WDS-no-broswer-open) reproducing the issue.