Issues

• [Bug]: Flatpak direffrent id's

  Type/Bug
  mattermost/desktop#4030 · Filter by author x09 opened on Oct 19, 2026

• [Bug]: Desktop shortcut is recreated on every update

  Type/Bug
  mattermost/desktop#4026 · Filter by author Profesor08 opened on Oct 18, 2026

• [Bug]: allowlist of trusted embedded origins

  Type/Bug
  mattermost/desktop#4024 · Filter by author pjenicot opened on Oct 13, 2026

• [Bug]: KDE Plasma notification history does not retain Mattermost notifications due to desktop-entry mismatch

  Type/Bug
  mattermost/desktop#4007 · Filter by author lushndm opened on Sep 22, 2026
  2

• [Bug]: Loading screen stays on top of a fully loaded tab (new tab / Ctrl+R) until switching tabs

  mattermost/desktop#3994 · Filter by author toliklunev opened on Sep 14, 2026
  1

• [Bug]: Notifications not working on macOS, versions 6.3.0 and 6.2.3, works in 6.2.2

  Cannot ReproduceType/Bug
  mattermost/desktop#3963 · Filter by author dciancu opened on Aug 25, 2026
  8

• [Bug]: Mattermost tray icon missing on Ubuntu 26.04 in 6.3.0, shows in 6.2.2

  Type/Bug
  mattermost/desktop#3954 · Filter by author MathijsHelderman opened on Aug 20, 2026
  5

• [Bug]: Inline PDFs render as a black page in Desktop 6.3.0 but work in 6.2.2

  Bug

  mattermost/desktop#3952 · Filter by author dperetti opened on Aug 19, 2026
  3

• [Bug]: Desktop 6.2.2 not compatible with packaged calls plugin on MM Server 11.9.0

  Type/Bug
  mattermost/desktop#3924 · Filter by author punkdefied opened on Jul 31, 2026
  4

• [Bug]: Maximized app, the link URL is being cutted.

  Type/BugWindows
  mattermost/desktop#3881 · Filter by author baek-sang opened on Jul 3, 2026
  3

• [Bug]: Desktop client marks downloaded files as downloaded from the Internet on Windows (ZoneId=3)

  Type/Bug
  mattermost/desktop#3871 · Filter by author rprokhorov opened on Jun 26, 2026
  2

• Renderer process crashes on copy/paste on Wayland (Linux Flatpak)

  Cannot ReproduceLinuxType/BugWayland
  mattermost/desktop#3820 · Filter by author christapi2099 opened on May 12, 2026
  1

• [Bug]: Server URL in the Desktop-Client is overwritten by SiteURL configured at server

  Type/Bug
  mattermost/desktop#3811 · Filter by author Profesor08 opened on May 7, 2026
  1

• [Bug]: Allow user installs on Windows

  Type/Bug
  mattermost/desktop#3740 · Filter by author bbodenmiller opened on Mar 20, 2026

• [Bug]: Customized source code

  Type/Bug
  mattermost/desktop#3724 · Filter by author gh-debug opened on Mar 13, 2026

• [Bug]: Mattermost Windows v6.0.4 Stuck on Blue Loading Screen (Server 11.3.0)

  All PlatformsType/Bug
  mattermost/desktop#3712 · Filter by author da5nsy opened on Mar 3, 2026
  16

• All servers gone (update 6. 1.0.)

  mattermost/desktop#3713 · Filter by author eldijomo opened on Mar 3, 2026
  1

• [Bug]: Window overlaps on multiple monitors

  Type/Bug
  mattermost/desktop#3582 · Filter by author stedekay opened on Nov 20, 2025
  3

• [Bug]: Unicode emojis not displaying

  Cannot ReproduceType/BugWindows
  mattermost/desktop#3579 · Filter by author kpedro88 opened on Nov 18, 2025
  3

• [Bug]: 6.0.0 fails to show window on Ubuntu 24.04 with some Wayland configurations

  ElectronLinuxType/Bug
  mattermost/desktop#3559 · Filter by author jnsgruk opened on Nov 14, 2025
  18

• [Bug]: mattermost-desktop: undefined symbol: cupsFreeDestInfo

  Type/Bug
  mattermost/desktop#3414 · Filter by author cpacchierotti opened on Apr 29, 2025

• [Bug]: update apt sources

  LinuxType/Bug
  mattermost/desktop#3304 · Filter by author felixhekhorn opened on Jan 29, 2025
  1

• [Bug]: Can't trust custom Certificate Authority, only the self signed certificate

  Type/Bug
  mattermost/desktop#3287 · Filter by author guillaumedsde opened on Jan 23, 2025
  8

• [Bug]: Fullscreen size but not fullscreen, after restart of app

  Type/BugWindows
  mattermost/desktop#3285 · Filter by author movahhedi opened on Jan 21, 2025
  4

• [Bug]: File upload with drag & drop not working (randomly) on GNOME with Wayland

  LinuxType/Bug
  mattermost/desktop#3268 · Filter by author leoniscsem opened on Dec 23, 2024
  3