Can't edit files in ui after update 10.5 to 10.6

hi, guys.
cat create, but can’t edit files in ui and “merge” button doesn’t exist, but all option still available in shell or from ui with quick_actions after update from 10.5 to 10.6.4
System information
System: Ubuntu 14.04
Current User: git
Using RVM: no
Ruby Version: 2.3.6p384
Gem Version:
Bundler Version:1.16.1
Rake Version: 12.3.0
Redis Version: 2.8.4
Git Version: 2.17.0
Sidekiq Version:5.0.5
Go Version: go1.8.3 linux/amd64

GitLab information
Version: 10.6.4
Revision: dee2c872c5e
Directory: /home/git/gitlab
DB Adapter: postgresql
URL: https://***
HTTP Clone URL: https://***
SSH Clone URL: https://***
Using LDAP: yes
Using Omniauth: no

GitLab Shell
Version: 6.0.4
Repository storage paths:

  • default: /home/git/repositories
    Hooks: /home/git/gitlab-shell/hooks
    Git: /usr/bin/git