Uncaught TypeError: Cannot read property 'length' of undefined

lib/search.etch.js:117 の Search.renderSearchField から始め、周辺の render フローと、記録された toggle、backspace、confirm、move-down コマンドを読んでください。可能であれば Windows 上の Atom 1.46.0 でシーケンスを再現し、同じ操作で TypeError が発生しなくなったら issue は完了したとみなしてください。

[Enter steps to reproduce:]

1. ...
2. ...

Atom: 1.46.0 x64
Electron: 4.2.7
OS: Microsoft Windows 10 Pro
Thrown From: github-source-code package 0.2.0

Stack Trace

Uncaught TypeError: Cannot read property 'length' of undefined

At C:\Users\iZhenius\.atom\packages\github-source-code\lib\search.etch.js:117

TypeError: Cannot read property 'length' of undefined
    at Search.renderSearchField (/packages/github-source-code/lib/search.etch.js:117:24)
    at Search.render (/packages/github-source-code/lib/search.etch.js:123:31)
    at updateSync (/packages/github-source-code/node_modules/etch/lib/component-helpers.js:107:34)
    at /packages/github-source-code/node_modules/etch/lib/component-helpers.js:72:7
    at DefaultScheduler.performUpdates (/packages/github-source-code/node_modules/etch/lib/default-scheduler.js:48:34)

Commands

     -1:08.6.0 github-source-code:toggle (atom-workspace.workspace.scrollbars-visible-always.theme-one-dark-syntax.theme-one-dark-ui)
     -0:54.5.0 core:backspace (input.hidden-input)
     -0:51.4.0 core:confirm (input.hidden-input)
     -0:48.3.0 core:move-down (input.hidden-input)
  2x -0:47.9.0 core:confirm (input.hidden-input)
  2x -0:47.3.0 core:move-down (input.hidden-input)
  3x -0:46.8.0 core:confirm (input.hidden-input)
  2x -0:42.6.0 github-source-code:toggle (input.hidden-input)
  3x -0:37.4.0 core:backspace (input.hidden-input)
  6x -0:33.4.0 core:confirm (input.hidden-input)
     -0:15.6.0 github-source-code:toggle (div.panels-item)

Non-Core Packages

atom-formatter-jsbeautify 1.1.2 
formatter 2.12.4 
github-source-code 0.2.0 
language-gitignore 0.3.0 
language-gradle 0.1.0 
language-groovy 0.7.0 
language-kotlin 0.5.0 
octophus 0.1.1