Redmine

Hi!
I was trying to move wiki pages from one project to another with "Rename". It moved the page all right but to what it seems to be a random project, not the one I wanted it to move. I observed this on 5.0.4 and it still works this way on 5.0.7 (just upgraded this morning)...

Poking in the database shows that for some reason it seems to choose project_id that is +1 to a wiki_id. Can someone please clarify? It also changes wiki_id every time it moves a page. Should it do that as well?