I hope it's ok if I ask a question that is similar, but not exactly the same as the OP's question. I usually leave Preview open. I use it often, so I leave the Preview application open but I minimize the documents and they reside in the right side of the dock, out of the way, but I can click on them to open them, OR I can click on Preview/Open recent documents/ and open them that way.
Suppose that Preview is open in the background, all my open Preview documents are minimized (maybe 3-4 total). Now, suppose I want to make Preview the active, "front" application. I click on the Preview app on the left side of the dock which brings it to the front, but it always opens one of the documents that are minimized in the dock. For some reason this bothers me.
I guess I could just click on the minimized document that I want to open, but for me it is quicker to bring Preview to the front, and use "open recent" to open a recent document, even if it is sitting in its minimized state on the right side of the dock. As I write this, it seems to make less and less sense as a process, but what can I say? It's how I do it.
Anyway, is it possible to click on the Preview app to bring it to the front, without having it open one of my minimized apps? Thanks for any help!