72 New contributors!!

thanks to the new contributors @michellegalindo @mvanhorn @kkk67-hub @HAKingDesign @w401002030 @nhatlong90 @hkzo @KunalTiwari-git @ayushi-wq @mmmm1402 @Jeetgajeraa @kalinco-glitch @pbcodesC @GHX5T-SOL @emulatronicGIT @Gilmoursa @Fileover @TrivCodez @jiangyj545 @puneetdixit200 @SaishWadnere @Pallavi-p-h @Muzzu8421 @amanbuilds-hub @ylzn567 @LearnAISubham7 @JoacoEsposito20 @titanniya542-spec @RegondaChandan @ImprovedTube2 @Antoniodeoliveirasegura @RadhaDintyala @lkuechler @Akanksha-H @neelavradutta @Vrindakr3300 @mirrana @andrianbalanesq @harshjainnn @chungus-big @viralion @Stiven-Gjekaj @communism420 @sakurakun999 @flujopy2025-beep @RaghavShubham @rayulumukku @Monu01123 @jamalkamaladdin @anupamme @imparable2022 @yu2971512385-ui @Masood-hue @akshar27 @DivyaRaval1909 @abhijeetnardele24-hash @Arslan-TR @aashish254 @pushkarsingh32 @titas-mahato @felipetmasiero @X0T1CK-LY @tejasvasingh2004 @wolfdate25 @jonasschulze-dev @waterWang @8rulerstar @tisankanj @CJWmort @Ishaan488 @onuracar-dev @00200200

What's Changed

• fix: persist playlist reversed state across navigation (#1836) by @li224242 in #3643
• Fix: prevent scroll propagation on playback speed button #3654 by @nguyentansinh123 in #3655
• fix(export): Safari export settings compatibility by @quantbitrealmSimon in #3652
• Add remove_subscriptions_most_relevant toggle by @Moglum in #3665
• Fix Next/Previous Video shortcuts breaking out of playlists by @LuciferDono in #3679
• Added feature to mute thumbnil previews by @pswitchy in #3681
• fix: update Join button CSS selectors for YouTube's new DOM by @majiayu000 in #3673
• fix: disable thumbnail hover playback on sidebar related videos by @majiayu000 in #3672
• fix: prevent time display hiding when remaining duration is enabled by @majiayu000 in #3671
• Fix: Resolves Firefox thumbnail not loading issue by @AryaXDG in #3691
• Fix portuguese translations by @drc-exe in #3698
• Add list layout option for Subscriptions page by @Harshil7875 in #3707
• Fix custom mini player covered by page content (z-index) by @Greal-dev in #3719
• Update messages.json for TH locale by @101plusmarco in #3715
• Bump flatted from 3.3.3 to 3.4.1 by @dependabot[bot] in #3703
• Fix YouTube Light and Dark theme switching in Themes panel Fix #3704 by @Saurabh-2607 in #3708
• feat(sidebar): add toggle to disable sidebar independent scroll by @Bingtagui404 in #3717
• Fix playlist up next autoplay by @HunterAP23 in #3721
• Bump flatted from 3.4.1 to 3.4.2 by @dependabot[bot] in #3720
• Bump minimatch from 3.1.2 to 3.1.5 by @dependabot[bot] in #3650
• Bump picomatch from 2.3.1 to 2.3.2 by @dependabot[bot] in #3732
• Fix play not working first time on autoplayDisabled by @dimon222 in #3730
• fix: YouTube playlist reverse reset on next page by @rajanarahul93 in #3742
• tidy #3551 ( @abhiraj ) by @rajanarahul93 in #3743
• feat: fix and improve auto-selection for default dubbed audio language by @Pieko16 in #3748
• Fix #3745: autodubbing when miniplayer by @xingzihai in #3749
• Fix #3745: autodubbing when miniplayer by @xingzihai in #3750
• feat: add preferred dubbing language auto-selection by @wiliyam in #3752
• fix(locale): add English name for preferredDubbingLanguage in _locales/en/messages.json by @wiliyam in #3755
• Fix: Pause video immediately instead of after setTimeout delay by @TeapoyY in #3757
• fix: prevent autoplay playback before play() is called by @TeapoyY in #3758
• Fix custom theme not applying after YouTube CSS changes by @veerlakshay in #3791
• fix: add .editorconfig for consistent code style by @karthikeyansundaram2 in #3786
• fix: prevent thumbnail from zooming and cropping in theater mode by @sanjay-1458 in #3793
• fix: Safari page-world injection on YouTube by @alextyang in #3774
• fix: sync PT-BR localization with EN source by @michellegalindo in #3798
• Bump brace-expansion from 1.1.12 to 1.1.14 by @dependabot[bot] in #3796
• fix(player): skip redundant seekTo(0) when video is already at start by @mvanhorn in #3807
• Add Watch Later button option to thumbnails by @kkk67-hub in #3858
• Feat: Option to add a Grayscale filter to Thumbnails by @HAKingDesign in #3857
• Add squared thumbnails option by @w401002030 in #3855
• fix: resolve popup preview video links by @nhatlong90 in #3852
• fix: Correct metadata parsing for forced playback speed by @hkzo in #3836
• Fix: Add smart hardware check and network probe for HD thumbnails by @AryaXDG in #3770
• fix: Prevent forced playback speed interval leak by @hkzo in #3837
• fix: Prevent forced playback speed exception when DATA.title is false by @hkzo in #3835
• Feat/shorts progress bar color by @KunalTiwari-git in #3834
• fix: remove 1x speed button when disabling feature by @ayushi-wq in #3832
• Add squared thumbnails option by @mmmm1402 in #3850
• fix: Livechat visibility when foreced-theater mode is on by @Jeetgajeraa in #3843
• fix(player): remove 1x speed button when speed buttons are disabled by @Jeetgajeraa in #3831
• Migrate legacy classic description settings by @kalinco-glitch in #3871
• Hide sign out menu item using SVG selector by @pbcodesC in #3788
• fix: 💡A way to fix the most recent UI change by @karthikeyansundaram2 in #3873
• fix: hide member-only channel videos with current badges by @GHX5T-SOL in #3863
• fix: 🐞shots up next autoplay didn't works by @karthikeyansundaram2 in #3874
• Add subscription live stream filter by @emulatronicGIT in #3876
• feat: include channel name in screenshot filename by @Gilmoursa in #3878
• fix: correct Portuguese translations for push/pull sync settings by @Fileover in #3897
• Fix themes not covering entire page #3888 by @TrivCodez in #3891
• fix: 💡 by @karthikeyansundaram2 in #3877
• feat: restore CC (subtitles) indicator on channel Videos page (fixes #1522) by @jiangyj545 in #3902
• fix: keep transcript visible when hiding sidebar (#1530) by @jiangyj545 in #3884
• fix: keep transcript visible when hiding sidebar by @nhatlong90 in #3851
• Keep comments sidebar applied after refresh by @puneetdixit200 in #3881
• Fix: Restore black screen when video ends and endscreen is hidden (#3838) by @SaishWadnere in #3841
• fix: update thumbnail dot selectors to target button-view-model by @Pallavi-p-h in #3845
• Fix cinema mode overlay blocking video screen (#3765) & Playlist Reverse by @suryaprakash0010 in #3766
• fix: resolve black font color on Show more/less in YouTube Dark theme by @Muzzu8421 in #3833
• fix: use video size instead of player size to calculate new video siz… by @Hypragon in #3915
• Fix visibility of extra buttons in YouTube dark theme: #issue : 3907 by @amanbuilds-hub in #3910
• Fix: Add Watch Later button to more thumbnails (#3906) by @ylzn567 in #3917
• feat: add separate quality setting for playlist videos (#3924) by @LearnAISubham7 in #3928
• feat: automatically resume video when internet connection is restored… by @JoacoEsposito20 in #3923
• Fix forced Theater Mode after refresh by @titanniya542-spec in #3937
• fix: show "Comments are turned off." message when comments are hidden by @LearnAISubham7 in #3935
• fix: hide only "Most relevant" section, not Shorts on subscriptions page (#3927) by @LearnAISubham7 in #3931
• fix: resolve comment sidebar scroll freezing by @RegondaChandan in #3921
• Revert "fix: Livechat visibility when foreced-theater mode is on " by @ImprovedTube2 in #3939
• feat: hide auto-dubbed menu items when "Disable auto dubbing" is enabled by @LearnAISubham7 in #3944
• fix: place bn_BD locale under messages.json by @alextyang in #3990
• fix: prepare Safari App Store packaging by @alextyang in #3989
• fix: avoid Safari DOM fallback for page-world injection by @alextyang in #3991
• fix: stabilize day-of-week date tests by @alextyang in #3994
• fix: insert below-player buttons after subscribe renderer loads by @alextyang in #3992
• fix: recover keyboard shortcuts after a missed keyup (#3986) by @Antoniodeoliveirasegura in #3988
• feat: add dynamic timestamp to exported settings filename by @RadhaDintyala in #3996
• fix list layout on Subscriptions page by @lkuechler in #3971
• feat: add option to hide Top live games section on home page by @Akanksha-H in #3998
• Feat/auto accepting watching by @neelavradutta in #3999
• Fix #4016 - Shorts redirect now works on every navigation by @Vrindakr3300 in #4027
• fix: resolve player initialization issues with fallback observer by @hkzo in #4018
• Fix TypeError when creating Fit-to-Window button multiple times by @hkzo in #4118
• Proposed fix for issue #1971 by @mirrana in #4117
• fix(test): align hide-sidebar transcript test with current CSS by @hkzo in #4029
• Fix #4020: Accordions for side panels by @andrianbalanesq in #4105
• Revert "Fix #4016 - Shorts redirect now works on every navigation" by @ImprovedTube2 in #4120
• Move contextMenus.onClicked listener out of updateContextMenu to the … by @harshjainnn in #4125
• fix: remove invalid background.scripts property from manifest.json by @harshjainnn in #4122
• fix: prevent tooltips from overflowing viewport by @hkzo in #4181
• Update Russian translation by @chungus-big in #4186
• fix(player): default Smart Speed to minimal speed when no heatmap data available (#3962) by @viralion in #4235
• fix: playlist quick delete failing silently after YouTube API change by @Stiven-Gjekaj in #4230
• fix: remove dead duplicate playerPlaybackSpeedButton in player.js by @mvanhorn in #3824
• Fix auto video recovery and auto-dubbed audio track handling by @communism420 in #4179
• fix: refine Japanese localization by @sakurakun999 in #4270
• fix: remove rounded corners for Shorts thumbnails and video previews by @chungus-big in #4258
• feat: add Volume Boost player button (addresses #4146) by @flujopy2025-beep in #4178
• style: remove trailing whitespace across codebase by @chungus-big in #4286
• fix(comments): let clicks through the thread hitbox when avatars are hidden by @RaghavShubham in #4292
• fix: remove duplicate playback speed button code and settings by @hkzo in #4166
• fix: resolve subtitles not enabled until reload race condition (#4192) by @harshjainnn in #4193
• fix: verify native click before marking Watch Later button as added by @harshjainnn in #4203
• fix(player): retry auto-fullscreen on play for Firefox by @neelavradutta in #4207
• fix: show player tooltips above video by @rayulumukku in #4295
• Fix: Show playback speed slider in settings menu by @hkzo in #4301
• feat: Support playback speed and volume shortcuts for shorts by @hkzo in #4312
• feat(player): add real-time video filters with presets and quick-toggle button (#4071) by @Monu01123 in #4112
• feat(locale): add Azerbaijani (az) translation by @jamalkamaladdin in #4323
• chore(locales): prune obsolete keys, remove duplicate in ja, and trim trailing whitespace by @chungus-big in #4316
• fix: upgrade brace-expansion to patched version (CVE-2026-13149) by @anupamme in #4344
• i18n: replace hard-coded menu labels with locale keys by @imparable2022 in #4336
• fix(livechat): collapse theatre full-bleed chat container when live chat is hidden (#3664) by @yu2971512385-ui in #4267
• Add 'about' message in ur_PK/messages.json by @Masood-hue in #4351
• Link Rate me to the Firefox listing on Firefox by @jamalkamaladdin in #4341
• fix: Improve music keyword detection for playback speed by @hkzo in #4352
• feat: overhaul Smart Speed engine with SponsorBlock, captions, and modular architecture (#4147) by @AryaXDG in #4355
• Fix Cinema Mode full-page blackout and Reverse Playlist not applying after refresh by @akshar27 in #4354
• Fix locales location error for #4351 by @dodieboy in #4359
• Fix: Play Video From Beginning doesn't override YouTube's async resume seek by @akshar27 in #4350
• Fix: clamp Smart Speed playback rate to 16x in _setRate by @AryaXDG in #4371
• feat: combine playback speed buttons A and B by @hkzo in #4369
• Remove duplicate messages in en locale by @hkzo in #4372
• fix: restore repeat button when player controls arrive late by @mvanhorn in #4367
• fix: collapse live chat shell instead of leaving a blank column by @mvanhorn in #4380
• fix: video filters button setting hidden when Screenshot is disabled by @hkzo in #4373
• fix: use a general Japanese label for playback speed by @hkzo in #4382
• Fix: resolve Video Filters CSP TrustedHTML violation and toggle deactivation by @DivyaRaval1909 in #4376
• Fix: avoid innerHTML to prevent CSP violations in Video Filters by @abhijeetnardele24-hash in #4375
• build: strip background.scripts for Chromium Manifest V3 support by @hkzo in #4384
• feat: emit an init_completed event when initialization is done by @Arslan-TR in #4385
• feat(player): add option to block the OPUS audio codec (#4363) by @aashish254 in #4364
• Add a Download Transcript button (.txt with timestamps) by @pushkarsingh32 in #4405
• Add per-channel permanent playback speed feature by @suryaprakash0010 in #4404
• fix(menu): include subheading names and sections in search (#4413) by @titas-mahato in #4414
• fix(transcript): support YouTube's new transcript panel in copy button by @felipetmasiero in #4396
• cinema-mode-bug by @X0T1CK-LY in #4387
• fix: retry subtitles language and auto-dubbing until the player is ready by @tejasvasingh2004 in #4415
• feat(comments): add option to hide images and GIFs in comments by @felipetmasiero in #4403
• feat: show HDR badge next to video title by @wolfdate25 in #4412
• fix(blocklist): support YouTube's new lockup thumbnails by @felipetmasiero in #4402
• fix: open Player > "Hide player controls bar buttons" sub-section (#4215) by @karthikeyansundaram2 in #4397
• fix(blocklist): guard against missing thumbnail for video previews by @felipetmasiero in #4394
• fix(appearance): stop like count animation instead of hiding it by @felipetmasiero in #4401
• feat(blocklist): add option to hide blocked videos completely by @felipetmasiero in #4392
• fix(blocklist): fall back to page header for channel title by @felipetmasiero in #4393
• i18n: complete missing German translations + remove duplicate English key by @jonasschulze-dev in #4345
• fix: prevent large playlist handler from interfering with YouTube queue autoplay (Fixes #4228) by @waterWang in #4263
• fix(player): reset playback speed to 1x at the live head by @8rulerstar in #4347
• fix(general): restore classic thumbnail metadata under renamed YouTube classes by @tisankanj in #4303
• fix: increase Key Scene button tooltip z-index to prevent overlap with video description (#4138) by @waterWang in #4256
• fix: prevent toggle switches from shrinking when set to 'on' (Fixes #4216) by @waterWang in #4253
• fix: include category chip bar in cursorLighting dimming rules (Fixes #4240) by @waterWang in #4255
• fix: apply thumbnail size setting to playlist video thumbnails in search results (Fixes #4248) [fj4WqyCCw3C5ShR1RfB7MoBPTpkRrBFYP1uT35g3MvT] by @waterWang in #4251
• fix: prevent #columns overflow:hidden from clipping playlist content when comments-sidebar is active (Fixes #4237) by @waterWang in #4252
• Show watched sections of a video on the seek bar by @Stiven-Gjekaj in #4262
• Fix "bulk delete videos by watch progress" feature by @CJWmort in #4320
• feat: add option to blur thumbnails by @Ishaan488 in #4218
• Fix: Ask (Gemini) panel placement with Comments in Sidebar enabled by @Ishaan488 in #4214
• fix(appearance): hdrBadge honors hdr_badge when invoked directly by @onuracar-dev in #4420
• Fix HDR badge appearing when disabled by @00200200 in #4419
• fix: add missing break in playerCinemaModeButton case in core.js by @hkzo in #4417

Full Changelog: 4.2026...v4.2400