Wrong vote counts when merging/unmerging topics

Hi,

I noticed a weird problem with counts of vote when merging topics.

1. As admin of the project, I create two topics.

2. Another single user vote +1 for each of them.

3. I merge the two topics:

Since it's the same user and the same idea, I should get 1 as the total votes.

That's indeed the vote count displayed just after the merge.

4. But if I refresh the page, then I see 2 as the vote count (the same single voter appears twice in the voters stats)

5. If I unmerge the topics, then the first one gets back +1

but the second one gets +2 votes (the real voter, and one anonymous!)

I made this test twice to be sure. Something's wrong!