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new tab page in firefox 15 & 16 , shows some of thumbnails and doesn't show some others , and i can't fix it be reloading pages . i also haven't delete cache.
at beginning my firefox works well with new page thumbnails feature , but once it start a problem to not to show thubnails of some of websites and show some others. for example facebook and twitter and some others can no be seen anymore. and i have to just click an empty area.
Alle antwurden (2)
Pages that send a no-store or no-cache header aren't cached and thus Firefox does not generate a thumbnail.
- Bug 756881 - New tab thumbnails not displayed (or old images displayed) for Facebook, Twitter (sites using Cache-Control no-store)
but it was working at beginning for facebook or persianhub.com and some others. but one day , it became like this. i think its a problem of this feature of firefox , because they also work properly in add ons which works like this