Charts on the duplicated page became blank after the original page was deleted

[wanyunyang]

When I duplicated a page in a report and deleted the original page, the charts on the duplicated page became blank. I tried a few times and the same problem occurred. It never happened before. Does anyone know what might be the cause of this issue? 

Thanks in advance!

[Patricia_Silva]

Hello @wanyunyang which version of Qlik Sense are you using? 

[wanyunyang]

Hello, I'm using Feb 2018 version.