I can't reproduce that behavior on my end. I see different behavior though.
My helm window is titled crm-complete, and the buffer is called
*helm-mode-crm-complete*

This seems to be the helm core package I am using.

helm-core-20170112.917

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Tue, Mar 14, 2017 at 12:24 PM, <aaermolov@gmail.com> wrote:

> Hi John,
>
> no, these do not seem to fix anything. :(
>
> Namely, the following is still happens:
>
> 1) I'm pressing C-c C-q then TAB to select freeform input
> 2) then there is "org-set-tags" above candidates list and buffer title
>    is "*helm-mode-org-set-tags*"
> 3) after any input candidates list looks like "[?]<helm query chars>"
>    (initial candidates disappeared)
>
> regards,
> Alex
>
> John Kitchin <jkitchin@andrew.cmu.edu> writes:
>
> > have you tried these settings:
> >
> > (setq helm-mode-fuzzy-match t
> >       helm-completion-in-region-fuzzy-match t)
> >
> > According to https://github.com/emacs-helm/helm/wiki/Fuzzy-matching, the
> > make fuzzy matching work everywhere.
> >
> > It seems to work ok for me.
> >
> > aaermolov@gmail.com writes:
> >
> >> Hi,
> >>
> >> I've spotted a problem with completing Org tags with Helm. While Helm is
> >> not at least about [fuzzy] completion, when I try to input any
> >> completion subsequence, all candidates are gone and variants are
> >> shrinked to whatever will be typed.
> >>
> >> Is there any widely known mistake, that I've stepped into with this
> >> case? Can anyone point me to some comprehensible direction?
> >>
> >> regards,
> >> Alex
> >
> >
> > --
> > Professor John Kitchin
> > Doherty Hall A207F
> > Department of Chemical Engineering
> > Carnegie Mellon University
> > Pittsburgh, PA 15213
> > 412-268-7803
> > @johnkitchin
> > http://kitchingroup.cheme.cmu.edu
>