new created Syntax Theme are not listed in the "Choose a Theme" list

[dumpspecs]

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: http://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: http://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom
  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

[new created Syntax Theme are not listed in the "Choose a Theme" list]

Steps to Reproduce

1. create a syntax theme with a multiple-word name (it's easier to reproduce with a multiple word name, e.g. this-is-test-theme-syntax)
2. in the new created project window, press ctrl+, enter the setting view
3. check the drop list of"Syntax Theme" and the "Community Themes" under "installed themes" section, the new created theme are not listed.

Expected behavior: the new theme should be list there

Actual behavior: the new created theme are not listed there

Reproduces how often: 30% ~ 50%

Versions

Atom : 1.17.2
Electron: 1.3.15
Chrome : 52.0.2743.82
Node : 6.5.0
OS: windows 7 enterprise sp1

Additional Information

my Atom is a quite clean installation, there is no init script, no dev packages installed.
tested with "atom --safe", still can reproduce this problem.