When approving a suggested edit, the pending edits count on the top passes from 1 to −1 [duplicate]

Question

Possible Duplicate:
Should it be possible to have a negative number of suggested edits in the queue?

I have approved a suggested edit on EL&U, and noticed that the count of the pending edits shown on the top of the page passed from 1 to −1.

As you see, the count shown on the tab is correct.

The software revision used on EL&U is 2012.6.1.2743.