[openbox] resize maximised windows?

[D.T.]

On Sun, 2020-05-31 at 18:29 -0400, Joey Morris wrote:

> The following is from the default configuration file, and it works
> for me on a
> maximized or unmaximized window:
> 
>     <mousebind button="A-Right" action="Drag">
>       <action name="Resize"/>
>     </mousebind> 
> 

Indeed it does, thank you!
Now the strange thing is that an unmaximised window can be resized by
click-draggging its edges (see the context names Top,Left,Right,Bottom
edge in /etc/xdg/openbox/rc.xml), but a maximised window cannot not.
3 of the edges disappear, but the top edge is still existent on a
maximised window - but it seems to loose that resize property.