Issue 1:
I'm using IntelliJ CE 2017.2.3 EAP and I get missing plugin warnings in flutter doctor when it seems like everything is installed properly and I have no issues building.

☆ flutter doctor
[✓] Flutter (on Mac OS X 10.12.6 16G29, locale en-US, channel master)
• Flutter at /Users/albertlardizabal/dev/flutter
• Framework revision 321b80961f (85 minutes ago), 2017-09-05 17:00:42 -0400
• Engine revision 29e0c1c281
• Tools Dart version 1.25.0-dev.11.0

[✓] Android toolchain - develop for Android devices (Android SDK 26.0.0)
• Android SDK at /Users/albertlardizabal/Library/Android/sdk
• Platform android-26, build-tools 26.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] iOS toolchain - develop for iOS devices (Xcode 8.3.3)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 8.3.3, Build version 8E3004b
• ios-deploy 1.9.0
• CocoaPods version 1.3.1

[✓] Android Studio
• Android Studio at /Applications/Android Studio 3.0 Preview.app/Contents
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Android Studio (version 2.3)
• Android Studio at /Applications/Android Studio.app/Contents
• Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[-] IntelliJ IDEA Community Edition (version EAP IC-172.3968.1)
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
• For information about installing plugins, see
https://flutter.io/intellij-setup/#installing-the-plugins

[✓] Connected devices
• Pixel • FA71A0302167 • android-arm • Android 7.1.2 (API 25)
• SM G930V • a674c503 • android-arm • Android 6.0.1 (API 23)
• Albert Lardizabal's iPhone 6 • c0e109b7e55a826627aa0f3e79af8931534f3554 • ios • iOS 11.0
• iPhone • 2cb36c18cfeec63f6a68b3192f094aaf35a626d0 • ios • iOS 10.0.2

Issue 2:
Hi,

I have two local instances of Android Studio: 3.3 and 3.4 Preview. Both have the latest available Flutter and Dart plugins installed.

When I run flutter doctor, it consistently fails to detect the plugins in the second instance.

flutter doctor -v
[✓] Flutter (Channel beta, v1.0.0, on Mac OS X 10.14.2 18C54, locale en-US)
• Flutter version 1.0.0 at /Users/julien.cayzac/github/flutter/flutter
• Framework revision 5391447fae (8 weeks ago), 2018-11-29 19:41:26 -0800
• Engine revision 7375a0f414
• Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
• Android SDK at /Users/julien.cayzac/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• ANDROID_HOME = /Users/julien.cayzac/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)
• All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 10.1, Build version 10B61
• ios-deploy 1.9.4
• CocoaPods version 1.5.3

[✓] Android Studio
• Android Studio at /Applications/Android Studio 3.4 Preview.app/Contents
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b22)

[✓] Android Studio (version 3.3)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 31.3.3
• Dart plugin version 182.5124
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

[✓] IntelliJ IDEA Community Edition (version 2018.3.2)
• IntelliJ at /Applications/IntelliJ IDEA CE.app
• Flutter plugin version 31.3.4
• Dart plugin version 183.4886.3

[!] Connected device
! No devices available

! Doctor found issues in 1 category.