Google Reader and the non-working Share button in the record

Just today, my colleagues and I began to notice a strange thing - the Share button (at the bottom of each entry in Google Reader), which appeared not so long ago in addition to the “+1”, when trying to share entries from the overwhelming majority of Russian-language tapes (feed) leads to an error. Tested on the tape Habra, LiveJournal and other resources. Moreover, through the “Share” in the top Google menu, the same entries are perfectly “shared”. Error text (URL may vary depending on the feed):

  The requested URL / ... is too large to process.  That's all we know. 

I ask to check and confirm or deny this behavior.