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If the arrow is back after reloading the page, the reference ID of the upvote URL timed out. This occasionally happens to me with long articles - I'll open the
by pmjordan 16y ago
If the arrow is back after reloading the page, the reference ID of the upvote URL timed out. This occasionally happens to me with long articles - I'll open the HN comments page in one tab, read the article in another, then come back to upvote it after the page has been open for a while, especially if I ended up doing something else in between.
- jacquesm 16y agoYes, that's another possible cause. What happens in that case is that the ajax script will receive an error underwater, but it never gets displayed.