I have the following code that removes some bloat from my reading app. ``` await handlePreferences().then((s) async { await _fwp.evalJavascript(pageCleaner).then((s) async { await _fwp.show(); }); }); ``` However, the webview flashes when it's shown, and you can see the bloated page for a second before being replaced. Is there a way to fix this?