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Larger width on vertical tab bar on right-side mode (Only Sidebar layout)

Bug

component: customizable-ui-toolbarsRelated to customizable UI feature originally from firefoxRelated to customizable UI feature originally from firefox

platform: windows

twilightThis issue occurs in the twilight branch!This issue occurs in the twilight branch!

Status: Open.

#14230 In zen-browser/desktop;

· naveen-devang opened on Jun 16, 2026

bug: Window Sync causes persistent duplicate windows (mirrored tabs) on session restore

Bug

component: syncRelated to sync function of ZenRelated to sync function of Zen

platform: linux

Status: Open.

#14229 In zen-browser/desktop;

· the-daonm opened on Jun 16, 2026

Youtube player can't go fullscreen

Bug

component: otherOther uncategorized issues inside ZenOther uncategorized issues inside Zen

platform: linux

Status: Open.

#14228 In zen-browser/desktop;

· LexiChomps opened on Jun 16, 2026

If favicon/page title for pinned tab changes since pinning it, favicon/page title reverts to old (presumably cached) state upon tab unload

Bug

component: tab-unloadingRelated to the tab unloader feature of ZenRelated to the tab unloader feature of Zen

platform: macOS

Status: Open.

#14227 In zen-browser/desktop;

· Dcfunkster opened on Jun 16, 2026

Unable to open browser, only dimmed window opens

Bug

component: otherOther uncategorized issues inside ZenOther uncategorized issues inside Zen

platform: windows

Status: Open.

#14226 In zen-browser/desktop;

· snothub opened on Jun 16, 2026

Zen blocking tab api

Bug

component: extensionsRelated to any issues with extensions inside zenRelated to any issues with extensions inside zen

platform: windows

Status: Open.

#14218 In zen-browser/desktop;

· distortivn opened on Jun 16, 2026

Disabling "Use hardware acceleration when available" causes immediate SIGSEGV on launch (zen-twilight)

Bug

component: otherOther uncategorized issues inside ZenOther uncategorized issues inside Zen

component: settingsRelated to the settings page of ZenRelated to the settings page of Zen

platform: linux

twilightThis issue occurs in the twilight branch!This issue occurs in the twilight branch!

Status: Open.

#14215 In zen-browser/desktop;

· icxes opened on Jun 16, 2026

AV1 performance issues

Bug

component: performanceRelated to zen performance issuesRelated to zen performance issues

platform: linux

Status: Open.

#14211 In zen-browser/desktop;

· CzeskiPingwin opened on Jun 15, 2026

"Add Shortcut" Glitch on Homepage

Bug

component: customizable-ui-toolbarsRelated to customizable UI feature originally from firefoxRelated to customizable UI feature originally from firefox

platform: macOS

Status: Open.

#14207 In zen-browser/desktop;

· fragrant-cow opened on Jun 15, 2026

sound problems in meet after update.

Bug

component: otherOther uncategorized issues inside ZenOther uncategorized issues inside Zen

platform: windows

Status: Open.

#14205 In zen-browser/desktop;

· ProtXI opened on Jun 15, 2026

YouTube player interface lag

Bug

component: otherOther uncategorized issues inside ZenOther uncategorized issues inside Zen

platform: windows

Status: Open.

#14202 In zen-browser/desktop;

· Saturn-00 opened on Jun 15, 2026

Bitwarden extension login fails with "NetworkError when attempting to fetch resource" on a fresh install (works in -hardened- Mozilla Firefox)

Bug

component: extensionsRelated to any issues with extensions inside zenRelated to any issues with extensions inside zen

platform: windows

Status: Open.

#14201 In zen-browser/desktop;

· danielebrox opened on Jun 15, 2026