v9.2.3 — 2026-06-06

• Fixes Firefox ad breakthrough during full-pod ad breaks. The injected Worker (which does all the ad blocking) was intermittently failing to load on Firefox because the blob: URL was created without a MIME type and revoked too quickly. The blob now has an explicit text/javascript type, revocation is delayed to 30s, and a heartbeat check detects if the Worker never started. If it didn't, a page-side M3U8 fetch override kicks in as degraded-mode ad blocking.

v9.2.2 — 2026-06-06

• Crashed playback workers now actually recover: the watchdog could never detect a hung worker (posting to a dead worker never fails), and "restarts" spawned an orphan worker Twitch never used so a dead worker stayed dead. Workers now reply to a liveness ping, the watchdog acts only when a pong is missed for 15s, and recovery reloads the player so Twitch creates a fresh, fully-wired worker (with a 30s cooldown to avoid reload loops).
• "Ads Blocked" no longer overshoots after a connection blip: queued counter updates were summed without a cap while the messaging bridge was down; the merged increment is now clamped to the real total.
• The active stream is no longer evicted from the worker cache: the URL→stream table now drops least-recently-used entries instead of oldest-inserted, preventing brief moments where ads slipped through on the stream you're watching.
• Hardened against stat tampering: the background worker now only accepts counter messages from the extension itself.
• Popout / Picture-in-Picture hooks fail safe: they can no longer throw into Twitch's own code and break login popups, clip sharing, or PiP.
• Recovery timers respect channel switches: post-ad and handoff timers no longer pause or seek the wrong stream after a fast channel change.

[9.2.1] - 2026-06-02

Changed

• The "Low quality fallback" option is now turned off by default.
  Previously, it would automatically drop to 360p every time an ad played, which felt jarring for most people watching on good connections. The system now only switches to low quality as a last resort when needed. This gives a cleaner, higher-quality experience by default while still preventing black screens during ads.

Fixed

• The "Low quality fallback" and "Ad Spoofing" toggles no longer randomly turn themselves back on after refreshing the page or switching channels.
• Updated the explanation text in the info popup for "Low quality fallback" so it accurately reflects the new behavior and default setting (translated in all 11 languages).
• Fixed ads sometimes leaking through during prerolls when Low Quality Fallback was disabled. The backup system now properly kicks in as a last resort and smoothly returns to high quality once the ad ends — with no flashing or black screens.
• Fixed a bug that could cause the video to briefly flash ads or get stuck in a recovery loop during ad breaks.

[9.1.4] - 2026-05-28

Fixed

• Synced 6 accidental hooks.ts divergences from main: deviceId hex validation, proper gql.twitch.tv URL parser, missing worker function injections (_forceClearBackupCooldownsIfStale, _incrementPlaylistMediaSequence, _fetchWithTimeout), previousMediaKey cleanup with object-type guards

[9.1.3] - 2026-05-28

Fixed

• Consecutive ad stale stream: when a second ad arrives within the 8-second post-ad continuation window, the "buffer drain prevention" path and the 3-second backup search cooldown both served stale cached playlists from the previous ad cycle, causing the user to watch past stream content. Both paths now skip cached returns during post-ad re-entry so a fresh backup search runs immediately.

[9.1.2] - 2026-05-27

Fixed

• Low quality fallback toggle now correctly filters autoplay from backup search when disabled
• Reload trigger on fallback disable no longer blocked by unreachable pinned-type guard

[9.1.0] - 2026-05-27

Changes

• Real-Time UI controls: Settings toggles automatically grey out and disable when Ad Blocking is OFF, while preserving descriptive help popup interactions
• Auto Player Soft-Reload: Toggling Low Quality Fallback OFF during active backup playback now programmatically triggers a non-disruptive, soft reload of the Twitch player, instantly returning you to native source-tier quality
• Audited 11-Locale Translations: Perfected translation phrasing line-by-line in German (de), Spanish (es), Portuguese (pt), Italian (it), Japanese (ja), Korean (ko), and Russian (ru).
• Critical Fixes: Fixed the info modal Got It button click toggling settings off, and resolved the popup TDZ crash on declaration
• UI & Modal Layout Fixes: Relocated modals to prevent border-radius layout clipping, and fixed a load crash due to missing elements

[9.0.8] - 2026-05-23

Fixed

• Fix consecutive midroll backup contamination: BackupVariantUrls whitelist no longer cleared on ad-end reset, and cached encodings re-populate variant URLs prevents backup media playlists contaminating native snapshot across ad breaks

[9.0.7] - 2026-05-21

Changed

• Buffer monitor throttles to 900ms during steady-state playback — ~33% fewer ticks on healthy streams, stall detection latency unchanged in practice
• Cached React fiber root, container key, and player reference across transient skip ticks — eliminates fiber-tree re-walks after every ad break and idle interval
• HLS strip path: single combined regex for ad metadata, no redundant text.split, single-pass output build, hoisted per-line scan

[9.0.6] - 2026-05-21

Added

• Worker-hook coexistence with TwitchNoSub run TTV-AB alongside TwitchNoSub simultaneously

[9.0.5] - 2026-05-21

Fixed

• First poll now awaits backup search synchronously instead of fire-and-forget + stopgap — eliminates all ad-flash leakage paths on prerolls. Player sees loading spinner until clean backup arrives, then plays clean stream directly.

[9.0.4] - 2026-05-21

Fixed

-Stopgap during backup search now returns headers-only playlist on all requests — eliminates ad flash during prerolls

[9.0.0] - 2026-05-21

Fixed

• Ad-blocking pipeline restored to stable working version zero decoder corruption
• Fixed persistent buffering and slideshow playback during ad breaks on certain streams (#18)
• Empty playlist fallback returns original content instead of header-only to prevent player stalls
• Backup search now checks all 5 player types (including autoplay 360p) for clean streams
• Eliminated brief black screen when first loading a channel backup search now starts immediately with stripped native as stopgap (~100% faster channel load)

Added

• CSAI fast path for all-live ad breaks strips tracking URLs from native and returns directly with no stream switch
• Ad segment caching preserves playlist structure for stable playback

Rollback to last stable version while investigating the 8.x.x regression

[8.8.3] - 2026-05-20

Fixed

• CSAI Fast Path sticky loop: properly reset the CSAI flag when exiting early due to empty or too short playlists, preventing player buffer freezes.
• Fallback backup stream searching: reset the fallback filler count whenever a stripped playlist contains valid segments, preventing infinite token re-fetch loop locks.
• Midroll ad leakage: require refreshed backup stream playlists to be clean and verified, successfully blocking late-entering midrolls on stream switches.
• Vitest configuration type safety: standardized the mock AdSegmentCache in setup files to Map matching the production environment.

Changed

• Playlist parsing performance: optimized HLS segment cache validation by passing pre-split arrays directly to avoid redundant split overhead on large VOD files.

v8.8.1 — 2026-05-20

Fixed

• Stripped playlists now pass through even when identical to source — prevents false rejections
• Live-segment lockout cleared after empty playlist to allow recovery on next poll
• Fallback backup streams no longer mark the stream as using backup

[8.8.0] - 2026-05-19

Fixed

• Ad leak during backup search cached clean playlists served with incremented media sequences while worker searches for backup
• Worker hangs 3500ms fetch timeouts on all Twitch Usher, GQL, and stream requests
• Duplicate backup searches guard prevents redundant searches when multiple m3u8 requests arrive simultaneously
• Empty segments now created in-memory (Blob URL) instead of network fetch, eliminating round-trip delay during ad replacement
• Stripped ad segments insert alternating DISCONTINUITY markers to help the video decoder handle segment gaps
• Silent filler format changed from 2 long segments to 6 short 1-second segments with DISCONTINUITY for smoother recovery
• Backup search retry loop removed, fresh-token fetch cap added to prevent excessive API calls

Changed

• Ad spoofing now enabled by default — sends fake ad-watch beacons to reduce anti-adblock fingerprinting
• Build process auto-generates .xpi and source .zip during packaging
• Native recovery probe cooldown increased (250→500ms min, 750→1500ms default)
• Fast-fallback promotion policy default fixed, autoplay player type properly flagged for downstream recovery
• Low-latency recovery min clean playlists reduced (12→6) for faster post-ad resume
• Verbose token error payloads removed from backup search logs

[8.7.1] - 2026-05-19

Fixed
Autoplay (360p) backup — added as last-resort player type when all Source-tier types are ad-marked

Fallback filler cycle cap — prevents Error #2000 crash from indefinite silent filler loops

Force-strip CSAI segments — fallback path no longer leaks ad-marked content

Silent video filler — empty playlists serve valid MP4 segments instead of bare headers

Stripped playlist padding — prevents buffer underrun while backup loads

Automatic rollback based on version [8.0.0].

[8.6.8] - 2026-05-19

Fixed
Empty playlist after ad stripping now serves minimal HLS headers instead of ad-marked content

Misleading "Token relay error" log renamed to "Spoof relay error"

GQL ad spoofing timeout: 1500ms → 5000ms

[8.0.0] - 2026-05-18

Added
Ad Spoofing toggle in popup UI — control anti-adblock fingerprinting beacons independently

Ad Spoofing info modal explaining the feature

Translations for Ad Spoofing in all 11 supported locales

Changed
Backup ad-marked retry cooldown reduced from 15s to 5s — prevents stale playlist serving during contaminated backup cascades

Initial backup search runs as background fire-and-forget when cached content is available, eliminating buffer drain during mid-roll ad detection

Buffer Fix toggle hidden from popup UI (always-on internally)

Ad Spoofing defaults to off — users who want anti-fingerprinting coverage can enable it from the popup

Fixed
Backup playlist staleness: force-clears all backup cooldowns when cached playlist exceeds 8s, preventing expired-segment looping

Stream freezing/audio lag during ad transitions caused by blocked synchronous backup search and cooldown deadlock

Ad-completion spoofing beacons made user-controllable via popup toggle

[7.7.5] - 2026-05-17

Fixed
Brief loading circle during silent backup hold caused by 10s backup refresh letting HLS segments expire

[7.7.4] - 2026-05-17

Added
Ad-completion spoofing: mimics Twitch telemetry (impression, quartile, pod-complete beacons) to reduce anti-adblock fingerprinting

Fixed
Silent backup hold now capped at 2 minutes to prevent indefinite low-res playback

Ad recovery cascade after player reload: suppressed rapid backup type bouncing

Improved
Backup refresh during silent hold slowed from 1.5s to 10s to reduce network pressure

[7.7.1] - 2026-05-17

Fixed
Loading circle freeze during ad recovery: stale clean backup now served during search instead of falling through to ad-marked content

Improved
Faster stall detection and recovery: post-ad grace stall threshold reduced from 3 to 2 ticks, retry cooldown from 4s to 1.5s