multiple clicks changes vote number

This error only occurs on my local install on my own computer and not on the live server. When I log in as admin and I click on the vote up (in the alternate voting view with only the +) the number sometimes changes even after I've voted before.

You have to click like several times to notice the error, maybe like 10-15 times, but after awhile, the vote total will change randomly. I started with a vote of 4 and with several clicks it can jump to 0, 3, 2, 5, 4 etc.

I'm not sure if this bug is caused by some local issue and if it's repeatable by other people, but I've tried reinstalling the module and even deleting other modules I thought might impact the vote, but the error still occurs.

Anyone else have this issue?