thumbs of visited web pages

[knownbug]

I have a Samsung S3 and first I had a page with thumbs of all my visited web pages. The thumbs were little but I could clearly see which page it was. But on a sudden the page shows me the visited web pages (with thumbs), but all the thumbs are not showing the web page but a question mark.
Is there a way I can get it back the original view: thumbs of the visited web pages?

Tip: I have internet on the phone.

Thanks for your knowledge
Knownbug