Dart-Code: Flutter Widget Inspector does not render correctly, mostly a blank page

Describe the bug

My Flutter Widget Inspector randomly broke a few weeks ago, and I haven’t been able to figure out how to get it working again. It’s either blank, or displays a few lines like this:

Workspace Environment

Dart Code extension: 3.77.20231116
Flutter extension: 3.77.20231101 (activated)

App: Visual Studio Code
App Host: desktop
Version: linux 1.84.2

Workspace type: Dart, Flutter (LSP) (Multiroot)

Dart (3.3.0-91.0.dev): /opt/flutter/bin/cache/dart-sdk
Flutter (3.17.0-0.0.pre): /opt/flutter (sdk gphone x86 64 (android-x64/android))

Output from 'dart info'

/opt/flutter/bin/cache/dart-sdk/bin/dart info

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General info

Dart 3.3.0-91.0.dev (dev) (Thu Nov 2 09:10:03 2023 -0700) on “linux_x64”
on linux / Linux 6.5.10-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Nov 2 19:59:55 UTC 2023
locale is en_US.utf8

Project info

sdk constraint: ‘>=3.1.5 <4.0.0’
dependencies: auto_size_text, boxy, cached_network_image, carousel_slider, collection, cross_file, cupertino_icons, device_info_plus, email_validator, exif, extended_image, flutter, flutter_cache_manager, flutter_email_sender, flutter_fgbg, flutter_image_utilities, flutter_localizations, flutter_persistent_value_notifier, flutter_reactive_value, flutter_svg, fluttertoast, geocoding, geolocator, getwidget, google_fonts, google_mlkit_face_detection, http, image_picker, intl, jiffy, line_awesome_flutter, logging, material_dialogs, package_info_plus, path_provider, persistent_bottom_nav_bar_v2, provider, random_string, routemaster, share_plus, shared_preferences, url_launcher
dev_dependencies: flutter_launcher_icons, flutter_lints, flutter_test, lints
elided dependencies: 11

Process info

Memory	CPU	Elapsed time	Command line
525 MB	0.0%	1-04:50:32	dart --enable-vm-service=0 --pause_isolates_on_start --disable-dart-dev -DSILENT_VM_SERVICE=true --write-service-info=file:<path>/vm.json --pause_isolates_on_exit --enable-asserts <path>/main.dart
714 MB	0.0%	1-18:50:10	dart …<path>/serverpod_cli.dart generate --watch
77 MB	0.0%	1-04:50:32	dart debug_adapter
75 MB	0.0%	3-04:10:13	dart devtools --machine --allow-embedding --port 9100
64 MB	0.0%	4-01:44:58	dart devtools --machine --allow-embedding --port 9101
2174 MB	0.4%	3-04:10:13	dart language-server --protocol=lsp --client-id=VS-Code --client-version=3.77.20231116
1480 MB	0.2%	2-00:32:28	dart language-server --protocol=lsp --client-id=VS-Code --client-version=3.77.20231116
94 MB	0.0%	4-01:44:58	flutter_tools.snapshot daemon
94 MB	0.0%	3-04:10:13	flutter_tools.snapshot daemon
74 MB	0.1%	51:18	flutter_tools.snapshot debug_adapter
170 MB	0.2%	51:18	flutter_tools.snapshot run --machine --start-paused -d emulator-5554 --devtools-server-address http:<path>/ --target <path>/main.dart

Output from 'flutter doctor'

/opt/flutter/bin/flutter doctor -v

[✓] Flutter (Channel beta, 3.17.0-0.0.pre, on Fedora Linux 38 (Workstation Edition) 6.5.10-200.fc38.x86_64, locale en_US.utf8)
    • Flutter version 3.17.0-0.0.pre on channel beta at /opt/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 0b591f2c82 (3 weeks ago), 2023-11-02 22:01:10 -0400
    • Engine revision dff66925dc
    • Dart version 3.3.0 (build 3.3.0-91.0.dev)
    • DevTools version 2.29.0

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
    • Android SDK at /home/luke/Android/Sdk
    • Platform android-UpsideDownCake, build-tools 33.0.1
    • Java binary at: /opt/android-studio/jbr/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • Chrome at google-chrome

[✓] Linux toolchain - develop for Linux desktop
    • clang version 16.0.6 (Fedora 16.0.6-3.fc38)
    • cmake version 3.27.7
    • ninja version 1.11.1
    • pkg-config version 1.8.0

[✓] Android Studio (version 2022.2)
    • Android Studio at /opt/android-studio
    • Flutter plugin version 73.0.2
    • Dart plugin version 222.4582
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)

[✓] VS Code (version 1.84.2)
    • VS Code at /usr/share/code
    • Flutter extension version 3.77.20231101

[✓] Connected device (3 available)
    • sdk gphone x86 64 (mobile) • emulator-5554 • android-x64    • Android 13 (API 33) (emulator)
    • Linux (desktop)            • linux         • linux-x64      • Fedora Linux 38 (Workstation Edition) 6.5.10-200.fc38.x86_64
    • Chrome (web)               • chrome        • web-javascript • Google Chrome 119.0.6045.159

[✓] Network resources
    • All expected network resources are available.

• No issues found!

Dart-Code: Flutter Widget Inspector does not render correctly, mostly a blank page

General info

Project info

Process info

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