Re: mouse not working in 'info'

[Eli Zaretskii]

> From: Colin Baxter <address@hidden>
> Date: Sun, 25 Mar 2018 15:15:17 +0100
> 
> I'm using emacs-27.0.50 (build 1, i686-pc-linux-gnu, GTK+ Version
> 3.14.5) on 3.16.0-5-686-pae #1 SMP Debian 3.16.51-3+deb8u1.
> 
> With emacs -q, M-x info RET, if I attempt to use the mouse to go up the
> hierarchy of links, i.e., Next: Prev: Up:, I get the errors
> 
> <header-line> <header-line> <mouse-2> is undefined
> <header-line> <mouse-3> is undefined
> 
> if I left- and right-click respectively. I only have a *two* button
> mouse. The issue exists only on going up the hierarchy of nodes, not
> down. 

Can you show the output of "C-h l" after these errors?