Wikipedia:Huggle Wars

Huggle Wars can occur when multiple editors using Huggle attempt to correct vandalism by hitting the "revert and warn" button at the same time. The first revert will work normally, but the second revert will revert to the vandalized version and inappropriately warn the first Huggle user.

Huggle Wars is an unfortunate occurrence. It can lead to removal of Huggle, rollback, and even a block for repeated offenses.

To avoid Huggle Wars, make sure to double check all of your reverts while using Huggle. Caution is especially important if you are an administrator, as you can block people with a keystroke or two.