Contribution edit form broken in popup for status cancelled/refunded

In the context of CRM-17589 I came across another bug with the contribution edit form:
If the status is set to 'Refunded' or 'Cancelled' the cancellation information panel should be showing. If you click on the 'edit' link in a contact's contributions tab, the edit popup opens and it works. However if you do the same thing from a contribution search result, it does not work.

I analysed the problem, and the reason is that the JS code adds a change handler to the #contribution_status_id element, which is usually working just fine. However, in the search form, there is another #contribution_status_id in the page than the one in the popup edit form: the one in the search parameters. Unfortunately the handler gets attached to that one, so the edit form logic doesn't work any more.

I didn't look into this, but I could imagine that there is a more issues like this. What's the best way to restrict those selectors to the current popup context?