You are probably right.

It seems my apt was not correctly set up. The lines for jessie-security
got commented out when I installed alpha because the installer could not
contact the swedish mirror.

After enabling it I now have Iceweasel 38.8.0 which at least lets me use
the forum appropriately.

/fuumind

ons 2016-05-11 klockan 12:08 +0100 skrev KatolaZ:
> On Wed, May 11, 2016 at 12:54:20PM +0200, fuumind wrote:
>
> [cut]
>
> >
> > Apparently these pages expect some functionality that is present in
> > Firefox 46.0 but is not in any of the other browsers. I do not know if
> > it is the same functionality missing in both cases. Do any of you guys
> > know what functionality this is and if there is a way to make it
> > available in Iceweasel or Chromium on Devuan?
> >
> > Hope it's not some proprietary crap!
> >
> > /fuumind
>
> It might well be some missing HTML5 functionality.
>
> My2Cents
>
> KatolaZ
>