Is there an error in this return page related to the Post submission method?

A page above a link to a B page click on the link can jump to the B page if I search for a data on a page (a page search using the Post submission method and data and B page does not matter) after searching the data and then click on the B page link When you go to page B and then click the Back button of your browser to return to page A, an error occurs.
If you do not search for data on page a directly click on the link to enter the B page and then click the browser's Return button to return to the a page will not have an error. Is it related to the Post submission method?

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A page above a link to a B page click on the link can jump to the B page if I search for a data on a page (a page search using the Post submission method and data and B page does not matter) after searching the data and then click on the B page link When you go to page B and then click the Back button of your browser to return to page A, an error occurs.
If you do not search for data on page a directly click on the link to enter the B page and then click the browser's Return button to return to the a page will not have an error. Is it related to the Post submission method?

You changed it to try get ! This is a very normal scene Ah! Some sites in the search page must have links to do not wait for the page link, and certainly more than one link, see what you describe is post submitted to return it?

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