brave/brave-browser

PWA window outside frame corners remain rounded on Linux even with system titlebar enabled

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#53.461 geöffnet am 09.03.2026

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OS/DesktopOS/Linuxfeature/pwahelp wantedpriority/P5

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Beschreibung

Brave Version: 1.87.192 (Chromium 145.0.7632.120) OS: Ubuntu 24.04.4 LTS DE: GNOME 46.0 on X11 GPU: AMD Radeon Vega

Problem

PWA app windows (e.g. WhatsApp Web) have rounded outside window frame corners that cannot be disabled.

What I tried:

  • "Use system title bar and borders" = ON ✅
  • "Show rounded corners on main content areas" = OFF ✅
  • Added --use-system-title-bar to PWA desktop file ✅
  • Disabled BraveWebViewRoundedCorners flag ✅
  • All failed — PWA corners still rounded ❌

Proof this is Brave controlled:

  • Regular Brave browser windows = square corners ✅
  • Pure GTK apps = square corners ✅
  • Only Brave PWA windows = rounded ❌
  • Changing GTK theme has zero effect on PWA corners

Expected behavior:

PWA windows should respect "Use system title bar" setting exactly like regular Brave windows do.

Related issue: #50033

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