auto-complete sometimes not works for org mode

[zhewuzhou]

Environment:

• Emacs: 25.2.1
• Spacemacs: 0.200.9
• OS: MacOS
• Using emacs in Iterm2

  The issue:

  When I open a org-mode file directly at first place, auto complete works perfectly fine, here is what I get from company-diag:

Emacs 25.2.1 (x86_64-apple-darwin15.6.0) of 2017-04-22 on ElCapitan-2.local Company 0.9.3

company-backends: (company-bbdb company-nxml company-css company-eclim company-semantic company-clang company-xcode company-cmake company-capf company-files (company-dabbrev-code company-gtags company-etags company-keywords) company-oddmuse company-dabbrev)

Used backend: company-dabbrev

However When I:

1. open a ELisp file at first place
2. using help-projectile switch to a org file

auto complete doesn't work, here is what I get from company-diag:

Emacs 25.2.1 (x86_64-apple-darwin15.6.0) of 2017-04-22 on ElCapitan-2.local Company 0.9.3

company-backends: nil Used backend: nil Major mode: org-mode

And when I enable global-company-mode in user-config, this never happen, but I know enable company globally is not a good idea because it conflict with the architecture principle of Spacemacs, so I am looking for proper solution for this instead of global-company-mode.

I spent 1 day on this, but can not understand why this happen, I suppose somehow when switch mode company-backends aren't initialized correctly. Can someone shed light on this?

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