I found a bug of template structure page-contents cash can not be cleared enough 
Author: SHIMEI N.
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First I used my own jpg photo at template-structure page-contents, and after that I removed because no need, but the cash for cellphone's browser can not be cleared. PC window is ok,cleared.
I think there might be no cash clearing code. So I cleared my cellphone's browsers' cash, the result is cleared.
My testing site is,
Posted on the
Author
I saw my site now, and the page contents photo can see on PC, I might have mistaken upload now.
... is regular both in the PC and in the Smartphone...
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ciao
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