⚡ Vivaldi Sidebar Fix: Microsoft Edge-Style AI Workspace

Turn Vivaldi Web Panels into a blazing-fast, Microsoft Edge Copilot-style flyout sidebar.
Instant 0.0 MB RAM discard, restored manual close button, 88% full-width expansion, clean base URL reset on close, Twitter/X & AI submit shortcut passthrough (Ctrl+Enter), and glitch-free wakeups.

ELI5: In 30 Seconds • Key Features • Why Stock Fails • Installation Guide • Benchmarks • Chronological Ledger • FAQ

🍼 ELI5: The Problem & The Fix in 30 Seconds

Explain Like I'm 5:
Imagine you open 4 heavy AI apps (ChatGPT, Claude, Gemini, Perplexity) or Twitter/X in your sidebar.

In Stock Vivaldi:

Clicking outside hides them visually, but their engines keep running full blast in the background, secretly eating 4 Gigabytes of your computer's RAM.

Vivaldi deletes the (X) Close button!

When you press Ctrl+Enter to post a tweet or send a prompt, Vivaldi steals the keystroke and does nothing!

With This Mod:

Clicking Outside (Multitasking): The panel simply glides away while keeping your active chat warm and ready.

Clicking [X] (Finished Work): The panel closes, wipes its memory down to 0.0 Megabytes, and cleanly destroys the tab session. When reopened, it creates a pristine fresh tab at your home URL!

Pressing Ctrl+Enter: Instantly submits tweets, prompts, Discord messages, and GitHub comments without browser interference!

flowchart TD
    A["Open Twitter / ChatGPT / Claude / Gemini / Any Site"] --> B{"What action do you take?"}

    B -->|"Press Ctrl+Enter / Cmd+Enter"| J["Text Passthrough Guard in bundle.js"]
    J --> K["Instant Tweet / Prompt / Comment Sent!"]

    B -->|"Click Anywhere Outside (Multitask)"| C["Panel Slides Away (Visual Only)"]
    C --> D["Active Session Kept Warm in RAM"]
    D --> E["Reopen: Chat context preserved intact!"]

    B -->|"Click Dedicated (X) Close Button"| F["150ms Glide Animation"]
    F --> G["chrome.tabs.remove: Complete tab destruction"]
    G --> H["Pge.Z memory registry wiped to 0.0 MB"]
    H --> I["Reopen: _createRelatedTab creates brand new tab at home URL!"]

🎯 The Problem: Why Stock Vivaldi Web Panels Struggle with Heavy AI Workflows

If you rely on web panels for AI assistants, stock Vivaldi introduces major roadblocks:

1. Missing Close (X) Button on Floating & Auto-Close Panels

In Vivaldi's core code (bundle.js), the shouldShowCloseButton logic explicitly suppresses the close button whenever both "Floating Panel" and "Auto-close Inactive Panel" are enabled. Users are forced to hunt for tiny sidebar switcher icons just to close a panel.

2. The Keyboard Shortcut Interception & Focus Blindspot

When typing inside a Web Panel (e.g. composing a tweet on Twitter/X or writing a prompt in Claude), pressing Ctrl+Enter (or Cmd+Enter on Mac) fails because Vivaldi's shortcut dispatcher omits Ctrl+Enter from its text-editing passthrough table and checks the background window tab for focus instead of the sidebar webview.

3. No Web Panel Hibernation: Silent RAM Bleed (3.8 GB+ in Background)

While Vivaldi can hibernate normal tabs, web panels have no hibernation support. When a panel auto-hides, Vivaldi merely adds visibility: hidden. The underlying Chromium <webview> processes remain fully alive—maintaining WebSockets, event listeners, and memory heaps. 4 active AI panels routinely hold 3.5 GB to 4.5 GB+ of RAM indefinitely.

4. Artificial 61.8% Golden Ratio & 65vw Panel Width Clamp

Vivaldi clamps panel dragging to the Golden Ratio (0.618 * innerWidth $\approx$ 61.8%) and hardcodes a CSS container ceiling of 65vw. On wide screens, you cannot expand an AI workspace or coding panel side-by-side.

5. Chat Session Amnesia vs. Multitasking Loss

Stock panels never reset on close. If you open Gemini, write a 20-message chat, and close it, reopening it days later loads the old stale thread instead of a clean prompt. Conversely, naïve reset mods wipe your chat even when you just clicked away to copy a snippet!

✨ Features: Microsoft Edge Sidebar Experience for Vivaldi

🛑 Unified Native Close (X) Button: Restores Vivaldi's crisp native 18x18px Pe.kze SVG close button directly into the web panel header.
⌨️ Instant Submit Shortcuts (Ctrl+Enter / Cmd+Enter): Full passthrough protection for instant post/submit on Twitter/X, ChatGPT, Claude, GitHub comments, Discord, Slack, and Jira.
⚡ True 0.0 MB RAM Reclamation: Invokes Chromium's native chrome.tabs.discard() on manual close, completely terminating heavy guest renderer processes.
🔄 Clean Base URL Reset: Closes panels back to their clean prompt (gemini.google.com/app, claude.ai/new, chatgpt.com/, grok.com/, copilot.microsoft.com/) on explicit close.
🛡️ Intelligent Session Preservation: Clicking outside or toggling the sidebar preserves your active session, drafts, and WebSockets untouched.
🎬 Two-Stage "Glide-First" Teardown: A 150ms glide delay lets Vivaldi slide out off-screen before discarding, eliminating compositor flashes or crash dialogs.
🚀 Glitch-Free Wakeup Engine: Respawns dead guest processes via atomic source re-assignment, completely preventing black boxes or infinite reload loops.
📐 88% Full-Width Expansion: Byte-length safe patch expands Vivaldi's width limits from 61.8% $\to$ 88%, enabling true desktop side-by-side multitasking.
🧩 Extension Panel Isolation: Automatically detects and protects extension side panels (Bitwarden vault, Translate) from unwanted URL resets or discards.
⚡ Zero DOM Thrashing: Uses a scoped container MutationObserver with subtree: false, preventing idle CPU usage or micro-stutters during typing.
🌐 100% Cross-Platform: Fully supported across Linux, Windows, macOS, and FreeBSD.
🛡️ APT Update Persistence: Backed by a Debian/Ubuntu/Mint DPkg::Post-Invoke hook so apt upgrade automatically re-applies your mod.

📊 Memory Benchmarks: 0.0 MB True RAM Discard vs Stock Vivaldi

Tested on Linux with 5 active web panels (Claude, Gemini, Grok, ChatGPT, Perplexity):

State	Stock Vivaldi	With `vivaldi-sidebar-fix`	Benefit
5 Panels Active	~3,850 MB	~3,850 MB	Full performance
Panels Hidden (Clicked Away / Blur)	~3,820 MB (Retained)	~3,820 MB (Preserved)	Instant multitasking switch
Closed via (X) Button	~3,800 MB (Leaked!)	~35 MB (Baseline idle)	⚡ ~3,765 MB Freed (99.1% Reclaimed)
Re-open Wakeup Time	Instant (Never freed)	< 350ms (Clean spawn, 0 black screens)	Smooth & responsive

🚀 Installation: Spoon-Fed Multi-OS Guide

🐧 Linux & FreeBSD (Ubuntu, Mint, Debian, Arch, Fedora, openSUSE)

Open your terminal and run:

git clone https://github.com/Tribal-Chief-001/vivaldi-sidebar-fix.git
cd vivaldi-sidebar-fix
sudo bash install.sh

Restart Vivaldi:

killall vivaldi-bin vivaldi 2>/dev/null || true
vivaldi &

🪟 Windows (Windows 10 / Windows 11)

Open PowerShell (Run as Administrator or standard user depending on where Vivaldi is installed):

git clone https://github.com/Tribal-Chief-001/vivaldi-sidebar-fix.git
cd vivaldi-sidebar-fix
Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
.\install.ps1

Works automatically with both Single-User (%LOCALAPPDATA%\Vivaldi\Application\...) and All-Users (C:\Program Files\Vivaldi\Application\...) installations!

Restart Vivaldi to enjoy the mod.

🍎 macOS (Apple Silicon M1/M2/M3 & Intel)

Open Terminal and run:

git clone https://github.com/Tribal-Chief-001/vivaldi-sidebar-fix.git
cd vivaldi-sidebar-fix
sudo bash install.sh

Restart Vivaldi:

killall Vivaldi 2>/dev/null || true
open -a Vivaldi

📦 Flatpak & Niche Setups

Environment	Resource Path	Installer Command
Flatpak (Linux)	`~/.var/app/com.vivaldi.Vivaldi/data/vivaldi`	`bash install.sh`
Vivaldi Snapshot (Preview)	Auto-detected on all platforms	`sudo bash install.sh` (or `.\install.ps1`)
FreeBSD / OpenBSD	`/usr/local/share/vivaldi/resources/vivaldi`	`sudo bash install.sh`

💡 Important Note: Adding & Configuring Web Panel Home URLs

Important

Ensure Your Web Panels Use Clean Home URLs! When adding a Web Panel in Vivaldi (e.g. ChatGPT, NotebookLM, Claude, Twitter/X, Artificial Analysis, Grok, GitHub, Reddit, or any custom dashboard), always enter the clean homepage / base URL (e.g., https://chatgpt.com/, https://notebooklm.google.com/, https://artificialanalysis.ai/, https://claude.ai/new).

Why this matters: When you add a web panel while currently viewing a deep article or specific chat thread (e.g., https://artificialanalysis.ai/models/some-article or https://chatgpt.com/c/xxx), Vivaldi permanently registers that subpath as the panel's default Home URL!
How to verify/fix existing panels in 5 seconds:
1. Right-click the web panel icon on your sidebar.
2. Click Edit Web Panel.
3. Ensure the Webpage Address field contains the clean root URL (e.g., https://notebooklm.google.com/ or https://artificialanalysis.ai/).
4. Click Save (or remove and re-add via the + icon on the sidebar).

Once configured with the base URL, you can browse as deep into articles, links, and chat threads as you like—clicking (X) will always cleanly reset straight back to that clean home URL!

⚙️ Recommended Vivaldi Settings (Edge Layout)

For the authentic Microsoft Edge flyout sidebar workflow:

Open Vivaldi Settings (Ctrl + F12 on Windows/Linux, Cmd + , on macOS).
Go to Panel $\to$ Panel Options:
- ✅ Check Floating Panel
- ✅ Check Auto-close Inactive Panel
Right-click any web panel icon in your sidebar and select Separate Width to drag panels up to 88% of your screen width!

🔬 How It Works Under the Hood

1. PointerEvent Dispatch

// Vivaldi's ToolbarButton listens to pointerdown / pointerup
const downEvent = new PointerEvent('pointerdown', { bubbles: true, cancelable: true, pointerType: 'mouse' });
const upEvent = new PointerEvent('pointerup', { bubbles: true, cancelable: true, pointerType: 'mouse' });
activeSwitchBtn.dispatchEvent(downEvent);
activeSwitchBtn.dispatchEvent(upEvent);

2. Exact Tab ID Targeting & Teardown

// Direct extraction from Chromium guest webview and full tab removal
const tabId = parseInt(wv.getAttribute('tab_id'), 10);
setTimeout(() => {
  // Completely destroys the underlying tab session from Chromium & Pge.Z
  chrome.tabs.remove(tabId);
}, 150); // Glide delay prevents compositor flashes

3. Pristine Tab Creation on Reopen

// On reopen, Pge.Z registry is clean, so Vivaldi natively creates a fresh tab:
_createRelatedTab() {
  if (void 0 !== this._getRelatedTabId()) return;
  chrome.tabs.create({ url: this.props.webPanel.url, windowId: this.winId, ... });
}

4. Text Shortcut Passthrough in bundle.js

// Text editing passthrough set (f) in bundle.js includes Ctrl+Enter:
let f = new Set([...f, "ctrl+enter", "meta+enter", "ctrl+shift+enter", "meta+shift+enter", "alt+enter"]);

❓ Frequently Asked Questions (FAQ)

Why didn't `Ctrl+Enter` work in Twitter / ChatGPT previously?

In stock Vivaldi, the global shortcut dispatcher in bundle.js omitted Ctrl+Enter and Meta+Enter from the text-editing passthrough set (f) and checked the background main tab instead of the sidebar panel for focus. This mod patches both issues, allowing instant post/tweet/submit actions to work reliably.

Does this work on Windows and Mac?

Yes! Vivaldi is built on the same Chromium + React core across Windows, macOS, Linux, and FreeBSD. The exact same JavaScript mod (edge-panel-mod.js) and bundle patches run identically on every operating system. We provide install.ps1 for Windows, install.sh for Linux/macOS/BSD, and patch-bundle.py that auto-detects all OS paths.

How do I get an Edge-like auto-hiding sidebar in Vivaldi?

Go to Vivaldi Settings $\to$ Panel $\to$ Panel Options, and check both Floating Panel and Auto-close Inactive Panel. With this mod installed, panels slide out smoothly over your active tab, auto-hide when clicking away, and release memory on close.

Why does Vivaldi hide the close button on floating panels?

In Vivaldi's React bundle (bundle.js), the shouldShowCloseButton property hides the close button whenever floating overlay and auto-close are enabled. This mod patches bundle.js cleanly and injects the native close button into the web panel header.

Does clicking away or multitasking reset my active chat session?

No! If you click away to copy code or read a webpage, the panel slides away while keeping your conversation and form state warm and alive. The clean base URL reset and RAM discard only happen when you explicitly click the (X) Close button.

Will system updates overwrite this mod?

Linux (Debian/Ubuntu/Mint): install.sh automatically configures /etc/apt/apt.conf.d/99-vivaldi-mod-persistence so apt upgrade re-applies it automatically.
Windows / macOS / Arch / Fedora: Whenever Vivaldi updates to a new major version, simply run .\install.ps1 (Windows) or sudo bash install.sh (Mac/Linux).

🔄 Uninstallation / Factory Stock Rollback

To restore Vivaldi to 100% factory original state on any platform:

On Linux & macOS:

cd vivaldi-sidebar-fix
sudo bash uninstall.sh

On Windows:

cd vivaldi-sidebar-fix
.\uninstall.ps1

This restores window.html and bundle.js from pristine .orig backups, deletes all mod files, and removes any persistence hooks.

🤝 Validation & Test Suite

Run the automated test suite locally:

node tests/test_mod.js
node tests/test_edge_cases.js
node tests/test_shortcuts.js
bash -n install.sh
bash -n uninstall.sh
python3 -m py_compile src/patch-bundle.py

📜 License & Ledger

Detailed Fix Autopsy: Read CHANGELOG.md for the complete chronological engineering ledger detailing every bug and fix.

Name		Name	Last commit message	Last commit date
.github		.github
src		src
tests		tests
.gitignore		.gitignore
CHANGELOG.md		CHANGELOG.md
FORUM_POST.md		FORUM_POST.md
LICENSE		LICENSE
README.md		README.md
install.ps1		install.ps1
install.sh		install.sh
uninstall.ps1		uninstall.ps1
uninstall.sh		uninstall.sh

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