I recently clicked “View Users” for many events that our team tracks. I noticed there are identical duplicate events for many users that are happening within seconds of one another. It seems like the events may be firing twice very closely in time.

The event properties are mostly identical. The only consistent difference between the duplicate events is event ID and timestamp. The initial event ID is much shorter in length, while the subsequent event looks standard. The time difference between the two events is sometimes less than 1 second, but typically seems to be no more than 2 seconds apart. Sometimes, I also notice that the device ID and Family, OS are different as well.

This issue seems to display not only in “View Users” but in any charts I make, if I select “Event Totals”. It is not possible for this to naturally be taking place, because many of the events require significant time for users to complete. In addition, our developers confirmed that for each of the main events experiencing this issue, we don’t have more than one event in place, also our system has blocks to prevent spamming of buttons.

What could be the cause of this?