R18n loads new locale only after first translation in Rails

[adie]

I've updated r18n gems from 1.1.0 to 1.1.3 and now when I'm changing locale the first translation on page is still in previous locale, but other translations are in current locale. After refreshing page everything is ok.
Also in development environent everything is working too thanks to reload_r18n filter, when I disable it I can reproduce the issue above.
I change locales using this action in controller (simplified):

def change_locale
  session[:locale] = params[:locale]
  redirect_to :back
end

In view if I write

<%= I18n.locale %>
<%= t('hello') %>
<%= I18n.locale %>

On first request without changing locale I'll get

en
Hello
en

When I'll try to change locale to :ru

en
Hello
ru

After just page refresh

ru
Привет
ru

As a workaround, I've added prepend_before_filter :set_locale:

def set_locale
  I18n.locale = session[:locale] if session[:locale]
end

And now it seems to be working fine.

[ai]

Hm. It seems like compatibility issue between R18n and I18n.

But I can try to investigate it only after new year :(.

[AlexWayfer]

Can you please provide an example app with able to reproduce this issue?