Favor existing window of an active buffer when opening that file/buffer from a different window

Question

I have a tab with the following window structure within:

________________________________
a                               |
                                |
               x                |
________________________________|
b                               | 
                                |
                                |
________________________________|

x is the cursor position.

:ls lists two buffers open on this tab: Main.cpp and maininclude.h

Main.cpp is visible on a, and maininclude.h is visible on b. From a, if I issue command :find maininclude.h, this buffer is (re)opened in a, even though it is currently activie/visible in b. That is, I end up having two views in two different windows of the same file that I would like to avoid.

Is there a way to favor/privilege the window in which a current buffer is active/visible so that a :find for that file/buffer issued from any window in the tab automatically goes to that window and places the cursor there? If that buffer is not active/visible in any window, then indeed that buffer should be made active in the window from which :find was issued from.

An animated gif example of what I am facing is provided here, reproduced below:

---

Edit1: set switchbuf=useopen does not work.

See image gif here, reproduced below:

Answer 1

As suggested in the comments, set switchbuf=useopen does not work with :find. What this means is that if you :find b with cursor in a, then b will be opened in a's window regardless of how switchbuf is set.

However, if from a, one issues :sb b, then indeed the focus shifts to b in the bottom window pane leaving a untouched.