Firefox crashes computer only on hlwm

[famubu at rawtext.club]

> Can you create an issue on github for this?
Thanks. I made an issue[1] at github.

> Could it be that you're using a compositor with Xfce and not with
> Herbstluftwm?
I'm don't really know what a compositor is. Thought it was something
done by
the window manager. Is there a way to check if I'm using a compositor?

[1] https://github.com/herbstluftwm/herbstluftwm/issues/1445