If you have more than one copy of React DevTools installed and enabled (e.g. the version in the Chrome store and a locally built version) they can interfere with each other.

DevTools should detect this case and warn by showing a dialog in the DevTools UI and/or by logging to the console.

Note that we _should not warn_ if a related tool like Fast Refresh is present, only another copy of DevTools.
extensionPanel => {
            extensionPanel.onShown.addListener(panel => {
              if (needsToSyncElementSelection) {
                needsToSyncElementSelection = false;
                bridge.send('syncSelectionFromNativeElementsPanel');
              }
              if (currentPanel === panel) {
                return;
              }
              currentPanel = panel;
              componentsPortalContainer = panel.container;
              if (componentsPortalContainer != null) {
                ensureInitialHTMLIsCleared(componentsPortalContainer);
                render('components');
                panel.injectStyles(cloneStyleTags);
                logEvent({event_name: 'selected-components-tab'});
              }
            });
            extensionPanel.onHidden.addListener(panel => {
              // T
            });
          },
        );
        chrome.devtools.panels.create(
          isChrome ? '⚛️ Profiler' : 'Profiler',
          '',
          'panel.html',
          extensionPanel => {
            extensionPanel.onShown.addListener(panel => {
              if (currentPanel === panel) {