flutter-intellij: Setting Flutter SDK path for default project does not set properly

Steps to Reproduce

1. Open IntelliJ IDE (with Flutter + Dart plugins already installed)
2. Close all existing projects (ie. you should only see IntelliJ project management window, with Create New Project, etc.)
3. Click Configure > Settings > Languages & Frameworks > Flutter
4. Input/Browse for the Flutter SDK Path
5. Click Apply or OK

Expected

Path should remain in Flutter SDK path text box

Actual

Path disappears from Flutter SDK path text box

Version info

[✓] Flutter (on Linux, channel alpha)
    • Flutter at /home/marcusljx/REPO/flutter
    • Framework revision dc4ca8db83 (3 days ago), 2017-05-11 15:33:29 -0700
    • Engine revision f99d3ef108
    • Tools Dart version 1.23.0-dev.11.11

[✓] Android toolchain - develop for Android devices (Android SDK 25.0.0)
    • Android SDK at /home/marcusljx/Android/Sdk
    • Platform android-25, build-tools 25.0.0
    • Java binary at: /home/marcusljx/.local/share/umake/android/android-studio/jre/bin/java
    • Java version: OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] Android Studio (version 2.3)
    • Android Studio at /home/marcusljx/.local/share/umake/android/android-studio
    • Gradle version 3.2
    • Java version: OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[-] IntelliJ IDEA Ultimate Edition (version 2016.2)
    • Dart plugin not installed; this adds Dart specific functionality.
    • Flutter plugin not installed; this adds Flutter specific functionality.
    • For information about managing plugins, see
      https://www.jetbrains.com/help/idea/managing-plugins.html

[-] WebStorm (version 2016.3)
    • Flutter plugin not installed; this adds Flutter specific functionality.
    • For information about managing plugins, see
      https://www.jetbrains.com/help/idea/managing-plugins.html

[✓] IntelliJ IDEA Ultimate Edition (version 2017.1)
    • Dart plugin version 171.4424
    • Flutter plugin version 13.1

[-] WebStorm (version 2017.1)
    • Flutter plugin not installed; this adds Flutter specific functionality.
    • For information about managing plugins, see
      https://www.jetbrains.com/help/idea/managing-plugins.html

[✓] Connected devices
    • None