bug#17210: 24.3.50; help mode [back] link to a C-h b keybind listing fails with message "Current buffer is not in Help mode"

[martin rudalics]

> That's what I thought.  But the same buffer (e.g. *scratch*) is passed
> to `describe-buffer-bindings' in both cases.  I'm sure that following
> the links forward and backward is responsible but why has that such
> drastic consequences?

It's `describe-bindings' itself, some sort of Heisenbug.

martin