右划返回白屏无动画

操作系统:Android 6.0.1 (ZUK Z2/MMB29M dev-keys/App7.22/v20007223)

WebView:Mozilla/5.0 (Linux; Android 6.0.1; ZUK Z2131 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/50.0.2661.86 Mobile Safari/537.36 ithome/rmsdklevel2/day/7.22