I was able to reproduce this issue in the current stable branch using Hixie's example.
Flutter Doctor:
C:\IdeaProjects\test>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.17.3, on Microsoft Windows [Version 10.0.18362.900], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[√] Android Studio (version 3.6)
[!] Android Studio (version 4.0)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[!] Android Studio
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
X android-studio-dir = C:\Program
X Android Studio not found at C:\Program
[√] IntelliJ IDEA Community Edition (version 2019.3)
[√] VS Code (version 1.45.1)
[√] Connected device (1 available)
! Doctor found issues in 2 categories.