bug#37840: Missing in the Emacs manuals:

[martin rudalics]

> While this works in most cases, for me it still gives a problem with
> Speedbar: Suppose frame A has input focus, showing buffer A. Open
> Speedbar via the menu. Then the Speedbar frame pops up, with input
> focus, but with the same layout as frame A had, and a frame B opens,
> with the layput intended for the Speedbar frame, but showing buffer
> A.

I cannot reproduce that here.  When with emacs -Q I ask to show the
speedbar from the Options menu, the speedbar pops up the same way
regardless of whether I have done these customizations or not.  Maybe
I don't understand the meaning of "layout".

What I did notice is that clicking on a file in the speedbar frame
always opens it in the same window of the initial frame thus maybe
disregarding the customizations but that's a different issue I
suppose.

martin