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Exceptionally high GPU usage by window manager when browser windows are on multiple monitors

Bug

component: performanceRelated to zen performance issuesRelated to zen performance issues

platform: windows

Status: Open.

#13666 In zen-browser/desktop;

· prytlubomir opened on May 12, 2026

Zen locale "nb" (Bokmal) does not match Firefox locale "nb-NO"

component: localizationLocalization issues inside zen (Linguistics)Localization issues inside zen (Linguistics)

Status: Open.

#13663 In zen-browser/desktop;

· iskunk opened on May 11, 2026

Picture-in-Picture fullscreen transition missing

component: media-controllerRelated to Media Controller feature of ZenRelated to Media Controller feature of Zen

Improvement

platform: windows

Status: Open.

#13662 In zen-browser/desktop;

· Ananthaweep opened on May 11, 2026

MacOS: Native keybindings (Cmd+P for Print, Cmd+F for Find, etc.) cannot be rebound to no-op.

Bug

component: keyboard-shortcutsRelated to the custom keyboard shortcuts feature of ZenRelated to the custom keyboard shortcuts feature of Zen

platform: macOS

Status: Open.

#13661 In zen-browser/desktop;

· Spelkington opened on May 11, 2026

The Shopify theme editor preview should load normally inside Zen Browser, allowing me to customize and preview my Shopify theme without errors.

Bug

component: otherOther uncategorized issues inside ZenOther uncategorized issues inside Zen

platform: macOS

Status: Open.

#13660 In zen-browser/desktop;

· JacuXx opened on May 11, 2026

Dialog BoX issue when multi monitor setup

Bug

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

platform: linux

Status: Open.

#13658 In zen-browser/desktop;

· JerryDev210 opened on May 11, 2026

Horizontal Workspace Switching Occasionally Gets Stuck in Tabs View

Bug

component: compact-modeRelated to compact mode feature of ZenRelated to compact mode feature of Zen

platform: linux

Status: Open.

#13657 In zen-browser/desktop;

· sai21-learn opened on May 11, 2026

Theme set to Automatic in Settings does not fully follow system theme unless Sidebar Edit Theme is also set to Automatic

Bug

component: mods-themesRelated to Mods / Themes feature of ZenRelated to Mods / Themes feature of Zen

platform: linux

Status: Open.

#13655 In zen-browser/desktop;

· ferhatkaplan-dev opened on May 11, 2026

"Copy URL" button/shortcut does not respect decodeURLsOnCopy flag

Bug

component: url-barRelated to URL bar feature of ZenRelated to URL bar feature of Zen

platform: macOS

Status: Open.

#13653 In zen-browser/desktop;

· Bringoff opened on May 11, 2026

Page/UI jitter when using the compact mode and change sidebar size hotkeys

Bug

component: compact-modeRelated to compact mode feature of ZenRelated to compact mode feature of Zen

platform: macOS

Status: Open.

#13651 In zen-browser/desktop;

· houbsmars opened on May 11, 2026

Tab groups not closing

Bug

component: tabsRelated to tabs component of ZenRelated to tabs component of Zen

platform: windows

Status: Open.

#13650 In zen-browser/desktop;

· PaulMcF1987 opened on May 11, 2026

Scrollbar appearing on the homepage

Bug

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

platform: macOS

Status: Open.

#13644 In zen-browser/desktop;

· daviddanko opened on May 10, 2026