Comment 1 for bug 1290045

I believe this is a (un)intended consequence of bug 1132238. The old behaviour was that any construction site building you had open would be closed once the building was finished because there was no link between the construction site and the finished building. Thus, in order to adjust the settings you would have to look up the building again and reopen the window in order to do so.

However, it looks like the implementation doesn't take into consideration whether the construction site window was minimized (probably an edge case which wasn't considered at the time). It would be nice if it could remember the current state of the construction window when replacing it with a building window.