Pull requests wrongly associated with issues

Hi,

Recently, during a release procedure, I came across behaviour that seems erroneous. Here's what I did, as far as I can remember:

1. I had 3 issues with 3 BitBucket pull requests associated with them, visible through the Development panel on the Issue page.
2. I accepted the pull requests into the develop branch. The Version page showed no warnings, as no issue was under review any longer.
3. I created another pull request to merge develop into master. BitBucket detected the issues as being associated with the pull request.
4. The Version page showed 3 warnings, saying that there are unmerged pull requests.

At this point, hovering over "Under Review" for each issue on the Version page showed a popup stating that there is 1 pull request. Clicking "Under Review" reveals 2 pull requests, one of which is the original pull request for the issue, and the other one is the one from develop into master. On the Issue page for any of the 3 issues, similar behaviour could be observed: the "Development" panel shows 1 pull request with status "Open". Clicking it reveals 2 pull requests, one of which is the develop -> master pull request with status "Open" and the other one is the original issue pull request with status "Merged".