In this MSE question, Barry Cipra pointed out that "the edit history indicates [I] voted to approve the edit [my] comment is objecting to", which was "@user274246, note that significantly changing your original question would make all existing answers invalid. So I highly suggest that you write a separate post for a different question, if this is the case, next time it happens." Barry said that the OP didn't make that edit, someone else did. I am 100% sure though, that I did not make any silly mistakes with reviewing suggested edits.
So I went ahead and double-checked "all actions" under my profile page, it shows two Approve's, whereas I only made one Approve (and that is for Uri Goren's suggested edit of Scientifica's answer to the question).
Here's my question: Has anyone encountered a similar issue before? Would it be possible to double-check the IP addresses that executed both Approve's?