Job Failed #151044312 - Merge request > Batch comments Feature is enabled in parallel diff adds draft comments to both sides

Job #151044312 failed for fa911c37:

1) Merge request > Batch comments Feature is enabled in parallel diff adds draft comments to both sides
     Got 0 failures and 2 other errors:

     1.1) Failure/Error: click_button 'Side-by-side'

          Capybara::ElementNotFound:
            Unable to find visible button "Side-by-side"
          # ./ee/spec/features/merge_request/batch_comments_spec.rb:121:in `block (4 levels) in <top (required)>'

     1.2) Failure/Error: raise JSConsoleError, message

          JSConsoleError:
            Unexpected browser console output:
            webpack-internal:///../../../node_modules/document-register-element/build/document-register-element.node.js 1295 document.registerElement is deprecated and will be removed in M73, around March 2019. Please use window.customElements.define instead. See https://www.chromestatus.com/features/4642138092470272 for more details.
            webpack-internal:///../../../node_modules/vue/dist/vue.esm.js 610:14 "[Vue warn]: Invalid prop: type check failed for prop \"isLocked\". Expected Boolean, got Null \n\n(found in \u003CRoot>)"
          # ./spec/support/capybara.rb:92:in `block (2 levels) in <top (required)>