Frankly, the most likely explanation is that you are mistaken. We've certainly had bugs in things, but the way that reputation tracking is done, what you described is an extremely unlikely type of bug.
But you give no information to look into. What node(s) did you see this happen on? When did you see "(+0 -2)" and then when did you see "(+0 -1)"? With something specific like that I could check.
Taking a guess, I could see some confusion resulting from seeing a node go from "-1 (+0 -1)" to "0" then "1". That isn't what you described, but inaccurate descriptions are not unheard of. Anyway, that happens because "insignificant" numbers of downvotes are not shown if the node's reputation is not negative, as documented in Display of Node Reputation.
- tye
In reply to Re: Error in the reputation breakdown field? (bugs)
by tye
in thread Error in the reputation breakdown field?
by Moron
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