display-buffer-reuse-frames unwanted behaviour

[Pitometsu]

Hello, I have such configuration.

(setq display-buffer-reuse-frames t)

(setq popwin:reuse-window (quote current))
(setq popwin:special-display-config
   (quote
    (...
     ("^\\*helm.*\\*$" :regexp t)
     (help-mode)
     (completion-list-mode :noselect t)
     (compilation-mode :noselect t)
     ...

To reuse exist buffers like compilation in other frames.

And I use popwin for emacs-helm/helm#1887 buffers placement.
However, when I use few frames, I expect to see *Helm* buffer in popwin in current frame, not in exist one.

It works like that not for all helm buffers,
here steps to reproduce:

F1 v => appears *helm-mode-describe-variable* buffer in popwin
foc in RET => show *Help* buffer in popwin for focus-in-hook variable
C-x 5 o => switch to other frame
F1 v => EXPECT to see *helm-mode-describe-variable* in current frame
. . . BUT ACTUALLY see *helm-mode-describe-variable* on previous frame.

[Pitometsu]

GNU Emacs 25.2.1 (x86_64-apple-darwin16.4.0, NS appkit-1504.81 Version 10.12.3 (Build 16D30)) of 2017-06-22

$ git -C ~/.emacs.d/el-get/popwin/ log -1
commit 95dea14c60019d6cccf9a3b33e0dec4e1f22c304 (grafted, HEAD -> master, tag: v1.0.0, origin/master, origin/HEAD)
Author: Tomohiro Matsuyama <m2ym.pub@gmail.com>
Date:   Sun Mar 15 22:00:07 2015 +0900

    Version 1.0.0

$ git -C ~/.emacs.d/el-get/helm/ log -1
commit 8d0ef8f7ba56a78d7c1292d3db65f993518b8a78 (grafted, HEAD -> master, origin/master, origin/HEAD)
Author: Thierry Volpiatto <thierry.volpiatto@gmail.com>
Date:   Thu Jun 22 22:55:31 2017 +0200

    Try to prevent read-only candidates (#1755).

    * helm.el (helm-insert-match): Do it.